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Finding the Fourth Proportional to 279,088.38, 385,174.44 and 156,614.49

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Solution

The fourth proportional to 279,088.38, 385,174.44 and 156,614.49 is: 216,146.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,088.38 : 385,174.44 = 156,614.49 : x
  2. Step 2: Convert to fraction form
    279,088.38/385,174.44 = 156,614.49/x
  3. Step 3: Cross multiply
    279,088.38x = 385,174.44 × 156,614.49
  4. Step 4: Simplify right side
    279,088.38x = 60,323,898,481.64
  5. Step 5: Solve for x
    x = 60,323,898,481.64/279,088.38
  6. Step 6: Final answer
    x = 216,146.22

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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.