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Finding the Fourth Proportional to 207,030.60, 310,469.10 and 82,345.80

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Solution

The fourth proportional to 207,030.60, 310,469.10 and 82,345.80 is: 123,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,030.60 : 310,469.10 = 82,345.80 : x
  2. Step 2: Convert to fraction form
    207,030.60/310,469.10 = 82,345.80/x
  3. Step 3: Cross multiply
    207,030.60x = 310,469.10 × 82,345.80
  4. Step 4: Simplify right side
    207,030.60x = 25,565,826,414.78
  5. Step 5: Solve for x
    x = 25,565,826,414.78/207,030.60
  6. Step 6: Final answer
    x = 123,488.15

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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.