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Finding the Fourth Proportional to 207,447.17, 311,226.12 and 74,340.88

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Solution

The fourth proportional to 207,447.17, 311,226.12 and 74,340.88 is: 111,531.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,447.17 : 311,226.12 = 74,340.88 : x
  2. Step 2: Convert to fraction form
    207,447.17/311,226.12 = 74,340.88/x
  3. Step 3: Cross multiply
    207,447.17x = 311,226.12 × 74,340.88
  4. Step 4: Simplify right side
    207,447.17x = 23,136,822,966.26
  5. Step 5: Solve for x
    x = 23,136,822,966.26/207,447.17
  6. Step 6: Final answer
    x = 111,531.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.