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Finding the Fourth Proportional to 442,368,987.20, 663,553,480.80 and 200,039,796.80

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Solution

The fourth proportional to 442,368,987.20, 663,553,480.80 and 200,039,796.80 is: 300,059,695.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,368,987.20 : 663,553,480.80 = 200,039,796.80 : x
  2. Step 2: Convert to fraction form
    442,368,987.20/663,553,480.80 = 200,039,796.80/x
  3. Step 3: Cross multiply
    442,368,987.20x = 663,553,480.80 × 200,039,796.80
  4. Step 4: Simplify right side
    442,368,987.20x = 132,737,103,465,164,704
  5. Step 5: Solve for x
    x = 132,737,103,465,164,704/442,368,987.20
  6. Step 6: Final answer
    x = 300,059,695.20

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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.