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Finding the Fourth Proportional to 207,502.20, 310,815.90 and 185,340.60

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Solution

The fourth proportional to 207,502.20, 310,815.90 and 185,340.60 is: 277,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,502.20 : 310,815.90 = 185,340.60 : x
  2. Step 2: Convert to fraction form
    207,502.20/310,815.90 = 185,340.60/x
  3. Step 3: Cross multiply
    207,502.20x = 310,815.90 × 185,340.60
  4. Step 4: Simplify right side
    207,502.20x = 57,606,805,395.54
  5. Step 5: Solve for x
    x = 57,606,805,395.54/207,502.20
  6. Step 6: Final answer
    x = 277,620.22

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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.