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Finding the Fourth Proportional to 398,663.10, 598,023.45 and 132,608.70

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Solution

The fourth proportional to 398,663.10, 598,023.45 and 132,608.70 is: 198,922.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,663.10 : 598,023.45 = 132,608.70 : x
  2. Step 2: Convert to fraction form
    398,663.10/598,023.45 = 132,608.70/x
  3. Step 3: Cross multiply
    398,663.10x = 598,023.45 × 132,608.70
  4. Step 4: Simplify right side
    398,663.10x = 79,303,112,274.02
  5. Step 5: Solve for x
    x = 79,303,112,274.02/398,663.10
  6. Step 6: Final answer
    x = 198,922.63

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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.