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Finding the Fourth Proportional to 356,389.76, 534,520.06 and 143,149.06

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Solution

The fourth proportional to 356,389.76, 534,520.06 and 143,149.06 is: 214,697.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,389.76 : 534,520.06 = 143,149.06 : x
  2. Step 2: Convert to fraction form
    356,389.76/534,520.06 = 143,149.06/x
  3. Step 3: Cross multiply
    356,389.76x = 534,520.06 × 143,149.06
  4. Step 4: Simplify right side
    356,389.76x = 76,516,040,751.80
  5. Step 5: Solve for x
    x = 76,516,040,751.80/356,389.76
  6. Step 6: Final answer
    x = 214,697.64

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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.