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Finding the Fourth Proportional to 318,761.75, 439,891.23 and 175,521.44

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Solution

The fourth proportional to 318,761.75, 439,891.23 and 175,521.44 is: 242,219.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,761.75 : 439,891.23 = 175,521.44 : x
  2. Step 2: Convert to fraction form
    318,761.75/439,891.23 = 175,521.44/x
  3. Step 3: Cross multiply
    318,761.75x = 439,891.23 × 175,521.44
  4. Step 4: Simplify right side
    318,761.75x = 77,210,342,132.97
  5. Step 5: Solve for x
    x = 77,210,342,132.97/318,761.75
  6. Step 6: Final answer
    x = 242,219.60

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1.5x scale

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.