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Finding the Fourth Proportional to 510,425.10, 765,474.38 and 168,805.08

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Solution

The fourth proportional to 510,425.10, 765,474.38 and 168,805.08 is: 253,153.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,425.10 : 765,474.38 = 168,805.08 : x
  2. Step 2: Convert to fraction form
    510,425.10/765,474.38 = 168,805.08/x
  3. Step 3: Cross multiply
    510,425.10x = 765,474.38 × 168,805.08
  4. Step 4: Simplify right side
    510,425.10x = 129,215,963,953.85
  5. Step 5: Solve for x
    x = 129,215,963,953.85/510,425.10
  6. Step 6: Final answer
    x = 253,153.62

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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.