Home / 280,221,140.29-386,729,076.77-156,485,721.73

Finding the Fourth Proportional to 280,221,140.29, 386,729,076.77 and 156,485,721.73

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Solution

The fourth proportional to 280,221,140.29, 386,729,076.77 and 156,485,721.73 is: 215,963,644.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,221,140.29 : 386,729,076.77 = 156,485,721.73 : x
  2. Step 2: Convert to fraction form
    280,221,140.29/386,729,076.77 = 156,485,721.73/x
  3. Step 3: Cross multiply
    280,221,140.29x = 386,729,076.77 × 156,485,721.73
  4. Step 4: Simplify right side
    280,221,140.29x = 60,517,578,692,330,024
  5. Step 5: Solve for x
    x = 60,517,578,692,330,024/280,221,140.29
  6. Step 6: Final answer
    x = 215,963,644.39

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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.