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Finding the Fourth Proportional to 398,821.63, 598,103.04 and 132,510.64

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Solution

The fourth proportional to 398,821.63, 598,103.04 and 132,510.64 is: 198,722.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,821.63 : 598,103.04 = 132,510.64 : x
  2. Step 2: Convert to fraction form
    398,821.63/598,103.04 = 132,510.64/x
  3. Step 3: Cross multiply
    398,821.63x = 598,103.04 × 132,510.64
  4. Step 4: Simplify right side
    398,821.63x = 79,255,016,616.35
  5. Step 5: Solve for x
    x = 79,255,016,616.35/398,821.63
  6. Step 6: Final answer
    x = 198,722.96

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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.