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Finding the Fourth Proportional to 279,245.61, 418,730.04 and 99,304.04

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Solution

The fourth proportional to 279,245.61, 418,730.04 and 99,304.04 is: 148,906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,245.61 : 418,730.04 = 99,304.04 : x
  2. Step 2: Convert to fraction form
    279,245.61/418,730.04 = 99,304.04/x
  3. Step 3: Cross multiply
    279,245.61x = 418,730.04 × 99,304.04
  4. Step 4: Simplify right side
    279,245.61x = 41,581,585,688.19
  5. Step 5: Solve for x
    x = 41,581,585,688.19/279,245.61
  6. Step 6: Final answer
    x = 148,906.86

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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.