Home / 287,021,658,764.74-396,090,048,013.26-155,034,007,613.86

Finding the Fourth Proportional to 287,021,658,764.74, 396,090,048,013.26 and 155,034,007,613.86

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Solution

The fourth proportional to 287,021,658,764.74, 396,090,048,013.26 and 155,034,007,613.86 is: 213,947,016,346.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,021,658,764.74 : 396,090,048,013.26 = 155,034,007,613.86 : x
  2. Step 2: Convert to fraction form
    287,021,658,764.74/396,090,048,013.26 = 155,034,007,613.86/x
  3. Step 3: Cross multiply
    287,021,658,764.74x = 396,090,048,013.26 × 155,034,007,613.86
  4. Step 4: Simplify right side
    287,021,658,764.74x = 61,407,427,519,461,921,390,592
  5. Step 5: Solve for x
    x = 61,407,427,519,461,921,390,592/287,021,658,764.74
  6. Step 6: Final answer
    x = 213,947,016,346.23

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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.