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Finding the Fourth Proportional to 318,761.76, 439,891.22 and 175,521.44

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Solution

The fourth proportional to 318,761.76, 439,891.22 and 175,521.44 is: 242,219.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,761.76 : 439,891.22 = 175,521.44 : x
  2. Step 2: Convert to fraction form
    318,761.76/439,891.22 = 175,521.44/x
  3. Step 3: Cross multiply
    318,761.76x = 439,891.22 × 175,521.44
  4. Step 4: Simplify right side
    318,761.76x = 77,210,340,377.76
  5. Step 5: Solve for x
    x = 77,210,340,377.76/318,761.76
  6. Step 6: Final answer
    x = 242,219.58

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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.