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Finding the Fourth Proportional to 408,565.04, 611,756.04 and 239,946.80

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Solution

The fourth proportional to 408,565.04, 611,756.04 and 239,946.80 is: 359,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,565.04 : 611,756.04 = 239,946.80 : x
  2. Step 2: Convert to fraction form
    408,565.04/611,756.04 = 239,946.80/x
  3. Step 3: Cross multiply
    408,565.04x = 611,756.04 × 239,946.80
  4. Step 4: Simplify right side
    408,565.04x = 146,788,904,178.67
  5. Step 5: Solve for x
    x = 146,788,904,178.67/408,565.04
  6. Step 6: Final answer
    x = 359,279.16

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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.