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Finding the Fourth Proportional to 354,543, 531,819.13 and 117,885.68

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Solution

The fourth proportional to 354,543, 531,819.13 and 117,885.68 is: 176,830.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,543 : 531,819.13 = 117,885.68 : x
  2. Step 2: Convert to fraction form
    354,543/531,819.13 = 117,885.68/x
  3. Step 3: Cross multiply
    354,543x = 531,819.13 × 117,885.68
  4. Step 4: Simplify right side
    354,543x = 62,693,857,117.96
  5. Step 5: Solve for x
    x = 62,693,857,117.96/354,543
  6. Step 6: Final answer
    x = 176,830.05

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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.