Home / 287,021,658,761.87-396,090,048,009.26-155,034,007,610.98

Finding the Fourth Proportional to 287,021,658,761.87, 396,090,048,009.26 and 155,034,007,610.98

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Solution

The fourth proportional to 287,021,658,761.87, 396,090,048,009.26 and 155,034,007,610.98 is: 213,947,016,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,021,658,761.87 : 396,090,048,009.26 = 155,034,007,610.98 : x
  2. Step 2: Convert to fraction form
    287,021,658,761.87/396,090,048,009.26 = 155,034,007,610.98/x
  3. Step 3: Cross multiply
    287,021,658,761.87x = 396,090,048,009.26 × 155,034,007,610.98
  4. Step 4: Simplify right side
    287,021,658,761.87x = 61,407,427,517,701,051,908,096
  5. Step 5: Solve for x
    x = 61,407,427,517,701,051,908,096/287,021,658,761.87
  6. Step 6: Final answer
    x = 213,947,016,342.24

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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.