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Finding the Fourth Proportional to 344,909.20, 517,954.20 and 187,445.20

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Solution

The fourth proportional to 344,909.20, 517,954.20 and 187,445.20 is: 281,488.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,909.20 : 517,954.20 = 187,445.20 : x
  2. Step 2: Convert to fraction form
    344,909.20/517,954.20 = 187,445.20/x
  3. Step 3: Cross multiply
    344,909.20x = 517,954.20 × 187,445.20
  4. Step 4: Simplify right side
    344,909.20x = 97,088,028,609.84
  5. Step 5: Solve for x
    x = 97,088,028,609.84/344,909.20
  6. Step 6: Final answer
    x = 281,488.66

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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.