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Finding the Fourth Proportional to 318,782.96, 439,920.45 and 175,542.66

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Solution

The fourth proportional to 318,782.96, 439,920.45 and 175,542.66 is: 242,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,782.96 : 439,920.45 = 175,542.66 : x
  2. Step 2: Convert to fraction form
    318,782.96/439,920.45 = 175,542.66/x
  3. Step 3: Cross multiply
    318,782.96x = 439,920.45 × 175,542.66
  4. Step 4: Simplify right side
    318,782.96x = 77,224,805,981.40
  5. Step 5: Solve for x
    x = 77,224,805,981.40/318,782.96
  6. Step 6: Final answer
    x = 242,248.85

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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.