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Finding the Fourth Proportional to 143,881.43, 215,821.80 and 38,700.50

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Solution

The fourth proportional to 143,881.43, 215,821.80 and 38,700.50 is: 58,050.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,881.43 : 215,821.80 = 38,700.50 : x
  2. Step 2: Convert to fraction form
    143,881.43/215,821.80 = 38,700.50/x
  3. Step 3: Cross multiply
    143,881.43x = 215,821.80 × 38,700.50
  4. Step 4: Simplify right side
    143,881.43x = 8,352,410,491.79
  5. Step 5: Solve for x
    x = 8,352,410,491.79/143,881.43
  6. Step 6: Final answer
    x = 58,050.65

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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.