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Finding the Fourth Proportional to 143,667.76, 215,482.20 and 38,487.64

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Solution

The fourth proportional to 143,667.76, 215,482.20 and 38,487.64 is: 57,726.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,667.76 : 215,482.20 = 38,487.64 : x
  2. Step 2: Convert to fraction form
    143,667.76/215,482.20 = 38,487.64/x
  3. Step 3: Cross multiply
    143,667.76x = 215,482.20 × 38,487.64
  4. Step 4: Simplify right side
    143,667.76x = 8,293,401,340.01
  5. Step 5: Solve for x
    x = 8,293,401,340.01/143,667.76
  6. Step 6: Final answer
    x = 57,726.25

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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.