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Finding the Fourth Proportional to 243,589.68, 365,569.20 and 103,446.72

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Solution

The fourth proportional to 243,589.68, 365,569.20 and 103,446.72 is: 155,248.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,589.68 : 365,569.20 = 103,446.72 : x
  2. Step 2: Convert to fraction form
    243,589.68/365,569.20 = 103,446.72/x
  3. Step 3: Cross multiply
    243,589.68x = 365,569.20 × 103,446.72
  4. Step 4: Simplify right side
    243,589.68x = 37,816,934,673.02
  5. Step 5: Solve for x
    x = 37,816,934,673.02/243,589.68
  6. Step 6: Final answer
    x = 155,248.51

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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.