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Finding the Fourth Proportional to 559,781.80, 839,135.10 and 185,612.20

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Solution

The fourth proportional to 559,781.80, 839,135.10 and 185,612.20 is: 278,240.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,781.80 : 839,135.10 = 185,612.20 : x
  2. Step 2: Convert to fraction form
    559,781.80/839,135.10 = 185,612.20/x
  3. Step 3: Cross multiply
    559,781.80x = 839,135.10 × 185,612.20
  4. Step 4: Simplify right side
    559,781.80x = 155,753,712,008.22
  5. Step 5: Solve for x
    x = 155,753,712,008.22/559,781.80
  6. Step 6: Final answer
    x = 278,240.04

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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.