Home / 287,021,658,766.24-396,090,048,015.32-155,034,007,615.36

Finding the Fourth Proportional to 287,021,658,766.24, 396,090,048,015.32 and 155,034,007,615.36

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Solution

The fourth proportional to 287,021,658,766.24, 396,090,048,015.32 and 155,034,007,615.36 is: 213,947,016,348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,021,658,766.24 : 396,090,048,015.32 = 155,034,007,615.36 : x
  2. Step 2: Convert to fraction form
    287,021,658,766.24/396,090,048,015.32 = 155,034,007,615.36/x
  3. Step 3: Cross multiply
    287,021,658,766.24x = 396,090,048,015.32 × 155,034,007,615.36
  4. Step 4: Simplify right side
    287,021,658,766.24x = 61,407,427,520,375,424,024,576
  5. Step 5: Solve for x
    x = 61,407,427,520,375,424,024,576/287,021,658,766.24
  6. Step 6: Final answer
    x = 213,947,016,348.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.