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Finding the Fourth Proportional to 207,079.40, 310,619.10 and 132,429.80

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Solution

The fourth proportional to 207,079.40, 310,619.10 and 132,429.80 is: 198,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,079.40 : 310,619.10 = 132,429.80 : x
  2. Step 2: Convert to fraction form
    207,079.40/310,619.10 = 132,429.80/x
  3. Step 3: Cross multiply
    207,079.40x = 310,619.10 × 132,429.80
  4. Step 4: Simplify right side
    207,079.40x = 41,135,225,289.18
  5. Step 5: Solve for x
    x = 41,135,225,289.18/207,079.40
  6. Step 6: Final answer
    x = 198,644.70

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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.