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Finding the Fourth Proportional to 390,475.46, 585,201.27 and 222,073.22

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Solution

The fourth proportional to 390,475.46, 585,201.27 and 222,073.22 is: 332,818.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,475.46 : 585,201.27 = 222,073.22 : x
  2. Step 2: Convert to fraction form
    390,475.46/585,201.27 = 222,073.22/x
  3. Step 3: Cross multiply
    390,475.46x = 585,201.27 × 222,073.22
  4. Step 4: Simplify right side
    390,475.46x = 129,957,530,376.99
  5. Step 5: Solve for x
    x = 129,957,530,376.99/390,475.46
  6. Step 6: Final answer
    x = 332,818.69

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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.