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Finding the Fourth Proportional to 279,207.57, 385,306.16 and 151,882.86

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Solution

The fourth proportional to 279,207.57, 385,306.16 and 151,882.86 is: 209,598.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,207.57 : 385,306.16 = 151,882.86 : x
  2. Step 2: Convert to fraction form
    279,207.57/385,306.16 = 151,882.86/x
  3. Step 3: Cross multiply
    279,207.57x = 385,306.16 × 151,882.86
  4. Step 4: Simplify right side
    279,207.57x = 58,521,400,797.00
  5. Step 5: Solve for x
    x = 58,521,400,797.00/279,207.57
  6. Step 6: Final answer
    x = 209,598.19

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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.