Home / 287,712,937.40-431,569,406.10-178,873,820.60

Finding the Fourth Proportional to 287,712,937.40, 431,569,406.10 and 178,873,820.60

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Solution

The fourth proportional to 287,712,937.40, 431,569,406.10 and 178,873,820.60 is: 268,310,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,937.40 : 431,569,406.10 = 178,873,820.60 : x
  2. Step 2: Convert to fraction form
    287,712,937.40/431,569,406.10 = 178,873,820.60/x
  3. Step 3: Cross multiply
    287,712,937.40x = 431,569,406.10 × 178,873,820.60
  4. Step 4: Simplify right side
    287,712,937.40x = 77,196,468,523,179,952
  5. Step 5: Solve for x
    x = 77,196,468,523,179,952/287,712,937.40
  6. Step 6: Final answer
    x = 268,310,730.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.