Home / 431,819.29-646,861.46-215,024.88

Finding the Fourth Proportional to 431,819.29, 646,861.46 and 215,024.88

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Solution

The fourth proportional to 431,819.29, 646,861.46 and 215,024.88 is: 322,105.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,819.29 : 646,861.46 = 215,024.88 : x
  2. Step 2: Convert to fraction form
    431,819.29/646,861.46 = 215,024.88/x
  3. Step 3: Cross multiply
    431,819.29x = 646,861.46 × 215,024.88
  4. Step 4: Simplify right side
    431,819.29x = 139,091,307,813.13
  5. Step 5: Solve for x
    x = 139,091,307,813.13/431,819.29
  6. Step 6: Final answer
    x = 322,105.36

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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.