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Finding the Fourth Proportional to 272,178.96, 408,213.60 and 170,931.79

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Solution

The fourth proportional to 272,178.96, 408,213.60 and 170,931.79 is: 256,363.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,178.96 : 408,213.60 = 170,931.79 : x
  2. Step 2: Convert to fraction form
    272,178.96/408,213.60 = 170,931.79/x
  3. Step 3: Cross multiply
    272,178.96x = 408,213.60 × 170,931.79
  4. Step 4: Simplify right side
    272,178.96x = 69,776,681,350.34
  5. Step 5: Solve for x
    x = 69,776,681,350.34/272,178.96
  6. Step 6: Final answer
    x = 256,363.24

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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.