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Finding the Fourth Proportional to 356,145.39, 534,318.21 and 143,062.92

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Solution

The fourth proportional to 356,145.39, 534,318.21 and 143,062.92 is: 214,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,145.39 : 534,318.21 = 143,062.92 : x
  2. Step 2: Convert to fraction form
    356,145.39/534,318.21 = 143,062.92/x
  3. Step 3: Cross multiply
    356,145.39x = 534,318.21 × 143,062.92
  4. Step 4: Simplify right side
    356,145.39x = 76,441,123,331.77
  5. Step 5: Solve for x
    x = 76,441,123,331.77/356,145.39
  6. Step 6: Final answer
    x = 214,634.60

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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.