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Finding the Fourth Proportional to 398,901.20, 598,222.20 and 132,616.40

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Solution

The fourth proportional to 398,901.20, 598,222.20 and 132,616.40 is: 198,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,901.20 : 598,222.20 = 132,616.40 : x
  2. Step 2: Convert to fraction form
    398,901.20/598,222.20 = 132,616.40/x
  3. Step 3: Cross multiply
    398,901.20x = 598,222.20 × 132,616.40
  4. Step 4: Simplify right side
    398,901.20x = 79,334,074,564.08
  5. Step 5: Solve for x
    x = 79,334,074,564.08/398,901.20
  6. Step 6: Final answer
    x = 198,881.51

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1.5x scale

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.