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Finding the Fourth Proportional to 318,581.38, 439,638.96 and 175,338.34

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Solution

The fourth proportional to 318,581.38, 439,638.96 and 175,338.34 is: 241,965.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,581.38 : 439,638.96 = 175,338.34 : x
  2. Step 2: Convert to fraction form
    318,581.38/439,638.96 = 175,338.34/x
  3. Step 3: Cross multiply
    318,581.38x = 439,638.96 × 175,338.34
  4. Step 4: Simplify right side
    318,581.38x = 77,085,565,445.73
  5. Step 5: Solve for x
    x = 77,085,565,445.73/318,581.38
  6. Step 6: Final answer
    x = 241,965.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.