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Finding the Fourth Proportional to 439,937.20, 659,468.40 and 202,866.40

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Solution

The fourth proportional to 439,937.20, 659,468.40 and 202,866.40 is: 304,097.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,937.20 : 659,468.40 = 202,866.40 : x
  2. Step 2: Convert to fraction form
    439,937.20/659,468.40 = 202,866.40/x
  3. Step 3: Cross multiply
    439,937.20x = 659,468.40 × 202,866.40
  4. Step 4: Simplify right side
    439,937.20x = 133,783,980,221.76
  5. Step 5: Solve for x
    x = 133,783,980,221.76/439,937.20
  6. Step 6: Final answer
    x = 304,097.90

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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.