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Finding the Fourth Proportional to 356,129.76, 534,247.56 and 103,412.46

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Solution

The fourth proportional to 356,129.76, 534,247.56 and 103,412.46 is: 155,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,129.76 : 534,247.56 = 103,412.46 : x
  2. Step 2: Convert to fraction form
    356,129.76/534,247.56 = 103,412.46/x
  3. Step 3: Cross multiply
    356,129.76x = 534,247.56 × 103,412.46
  4. Step 4: Simplify right side
    356,129.76x = 55,247,854,428.60
  5. Step 5: Solve for x
    x = 55,247,854,428.60/356,129.76
  6. Step 6: Final answer
    x = 155,134.06

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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.