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Finding the Fourth Proportional to 392,700.96, 588,876.48 and 143,208

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Solution

The fourth proportional to 392,700.96, 588,876.48 and 143,208 is: 214,748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,700.96 : 588,876.48 = 143,208 : x
  2. Step 2: Convert to fraction form
    392,700.96/588,876.48 = 143,208/x
  3. Step 3: Cross multiply
    392,700.96x = 588,876.48 × 143,208
  4. Step 4: Simplify right side
    392,700.96x = 84,331,822,947.84
  5. Step 5: Solve for x
    x = 84,331,822,947.84/392,700.96
  6. Step 6: Final answer
    x = 214,748.20

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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.