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Finding the Fourth Proportional to 356,487.87, 534,731.57 and 143,255.83

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Solution

The fourth proportional to 356,487.87, 534,731.57 and 143,255.83 is: 214,883.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,487.87 : 534,731.57 = 143,255.83 : x
  2. Step 2: Convert to fraction form
    356,487.87/534,731.57 = 143,255.83/x
  3. Step 3: Cross multiply
    356,487.87x = 534,731.57 × 143,255.83
  4. Step 4: Simplify right side
    356,487.87x = 76,603,412,213.90
  5. Step 5: Solve for x
    x = 76,603,412,213.90/356,487.87
  6. Step 6: Final answer
    x = 214,883.64

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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.