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Finding the Fourth Proportional to 261,177, 392,128.68 and 134,910.56

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Solution

The fourth proportional to 261,177, 392,128.68 and 134,910.56 is: 202,553.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,177 : 392,128.68 = 134,910.56 : x
  2. Step 2: Convert to fraction form
    261,177/392,128.68 = 134,910.56/x
  3. Step 3: Cross multiply
    261,177x = 392,128.68 × 134,910.56
  4. Step 4: Simplify right side
    261,177x = 52,902,299,810.86
  5. Step 5: Solve for x
    x = 52,902,299,810.86/261,177
  6. Step 6: Final answer
    x = 202,553.44

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1.5x scale

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.