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Finding the Fourth Proportional to 356,451.27, 534,635.29 and 143,210.56

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Solution

The fourth proportional to 356,451.27, 534,635.29 and 143,210.56 is: 214,799.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,451.27 : 534,635.29 = 143,210.56 : x
  2. Step 2: Convert to fraction form
    356,451.27/534,635.29 = 143,210.56/x
  3. Step 3: Cross multiply
    356,451.27x = 534,635.29 × 143,210.56
  4. Step 4: Simplify right side
    356,451.27x = 76,565,419,276.66
  5. Step 5: Solve for x
    x = 76,565,419,276.66/356,451.27
  6. Step 6: Final answer
    x = 214,799.12

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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.