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Finding the Fourth Proportional to 318,761.25, 439,890.54 and 175,520.94

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Solution

The fourth proportional to 318,761.25, 439,890.54 and 175,520.94 is: 242,218.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,761.25 : 439,890.54 = 175,520.94 : x
  2. Step 2: Convert to fraction form
    318,761.25/439,890.54 = 175,520.94/x
  3. Step 3: Cross multiply
    318,761.25x = 439,890.54 × 175,520.94
  4. Step 4: Simplify right side
    318,761.25x = 77,210,001,077.91
  5. Step 5: Solve for x
    x = 77,210,001,077.91/318,761.25
  6. Step 6: Final answer
    x = 242,218.91

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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.