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Finding the Fourth Proportional to 318,377.28, 439,371.36 and 175,143.36

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Solution

The fourth proportional to 318,377.28, 439,371.36 and 175,143.36 is: 241,703.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,377.28 : 439,371.36 = 175,143.36 : x
  2. Step 2: Convert to fraction form
    318,377.28/439,371.36 = 175,143.36/x
  3. Step 3: Cross multiply
    318,377.28x = 439,371.36 × 175,143.36
  4. Step 4: Simplify right side
    318,377.28x = 76,952,976,278.17
  5. Step 5: Solve for x
    x = 76,952,976,278.17/318,377.28
  6. Step 6: Final answer
    x = 241,703.73

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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.