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Finding the Fourth Proportional to 208,891.53, 288,270.95 and 113,398.29

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Solution

The fourth proportional to 208,891.53, 288,270.95 and 113,398.29 is: 156,489.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,891.53 : 288,270.95 = 113,398.29 : x
  2. Step 2: Convert to fraction form
    208,891.53/288,270.95 = 113,398.29/x
  3. Step 3: Cross multiply
    208,891.53x = 288,270.95 × 113,398.29
  4. Step 4: Simplify right side
    208,891.53x = 32,689,432,219.68
  5. Step 5: Solve for x
    x = 32,689,432,219.68/208,891.53
  6. Step 6: Final answer
    x = 156,489.98

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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.