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Finding the Fourth Proportional to 395,613.54, 593,001.95 and 129,302.55

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Solution

The fourth proportional to 395,613.54, 593,001.95 and 129,302.55 is: 193,817.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,613.54 : 593,001.95 = 129,302.55 : x
  2. Step 2: Convert to fraction form
    395,613.54/593,001.95 = 129,302.55/x
  3. Step 3: Cross multiply
    395,613.54x = 593,001.95 × 129,302.55
  4. Step 4: Simplify right side
    395,613.54x = 76,676,663,643.46
  5. Step 5: Solve for x
    x = 76,676,663,643.46/395,613.54
  6. Step 6: Final answer
    x = 193,817.09

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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.