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Finding the Fourth Proportional to 390,593.43, 585,787.62 and 165,838.17

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Solution

The fourth proportional to 390,593.43, 585,787.62 and 165,838.17 is: 248,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,593.43 : 585,787.62 = 165,838.17 : x
  2. Step 2: Convert to fraction form
    390,593.43/585,787.62 = 165,838.17/x
  3. Step 3: Cross multiply
    390,593.43x = 585,787.62 × 165,838.17
  4. Step 4: Simplify right side
    390,593.43x = 97,145,946,909.46
  5. Step 5: Solve for x
    x = 97,145,946,909.46/390,593.43
  6. Step 6: Final answer
    x = 248,713.72

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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.