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Finding the Fourth Proportional to 143,563.16, 215,344.74 and 38,379.39

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Solution

The fourth proportional to 143,563.16, 215,344.74 and 38,379.39 is: 57,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,563.16 : 215,344.74 = 38,379.39 : x
  2. Step 2: Convert to fraction form
    143,563.16/215,344.74 = 38,379.39/x
  3. Step 3: Cross multiply
    143,563.16x = 215,344.74 × 38,379.39
  4. Step 4: Simplify right side
    143,563.16x = 8,264,799,760.91
  5. Step 5: Solve for x
    x = 8,264,799,760.91/143,563.16
  6. Step 6: Final answer
    x = 57,569.09

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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.