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Finding the Fourth Proportional to 458,909.35, 687,587.33 and 281,044.89

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Solution

The fourth proportional to 458,909.35, 687,587.33 and 281,044.89 is: 421,091.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,909.35 : 687,587.33 = 281,044.89 : x
  2. Step 2: Convert to fraction form
    458,909.35/687,587.33 = 281,044.89/x
  3. Step 3: Cross multiply
    458,909.35x = 687,587.33 × 281,044.89
  4. Step 4: Simplify right side
    458,909.35x = 193,242,906,227.86
  5. Step 5: Solve for x
    x = 193,242,906,227.86/458,909.35
  6. Step 6: Final answer
    x = 421,091.68

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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.