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Finding the Fourth Proportional to 151,475.40, 227,213.10 and 128,147.40

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Solution

The fourth proportional to 151,475.40, 227,213.10 and 128,147.40 is: 192,221.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,475.40 : 227,213.10 = 128,147.40 : x
  2. Step 2: Convert to fraction form
    151,475.40/227,213.10 = 128,147.40/x
  3. Step 3: Cross multiply
    151,475.40x = 227,213.10 × 128,147.40
  4. Step 4: Simplify right side
    151,475.40x = 29,116,768,010.94
  5. Step 5: Solve for x
    x = 29,116,768,010.94/151,475.40
  6. Step 6: Final answer
    x = 192,221.10

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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.