Home / 438,619.68-656,893.13-214,133.85

Finding the Fourth Proportional to 438,619.68, 656,893.13 and 214,133.85

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Solution

The fourth proportional to 438,619.68, 656,893.13 and 214,133.85 is: 320,694.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,619.68 : 656,893.13 = 214,133.85 : x
  2. Step 2: Convert to fraction form
    438,619.68/656,893.13 = 214,133.85/x
  3. Step 3: Cross multiply
    438,619.68x = 656,893.13 × 214,133.85
  4. Step 4: Simplify right side
    438,619.68x = 140,663,053,894.78
  5. Step 5: Solve for x
    x = 140,663,053,894.78/438,619.68
  6. Step 6: Final answer
    x = 320,694.81

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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.