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Finding the Fourth Proportional to 395,028, 592,542 and 99,540

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Solution

The fourth proportional to 395,028, 592,542 and 99,540 is: 149,310

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,028 : 592,542 = 99,540 : x
  2. Step 2: Convert to fraction form
    395,028/592,542 = 99,540/x
  3. Step 3: Cross multiply
    395,028x = 592,542 × 99,540
  4. Step 4: Simplify right side
    395,028x = 58,981,630,680
  5. Step 5: Solve for x
    x = 58,981,630,680/395,028
  6. Step 6: Final answer
    x = 149,310

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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.