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Finding the Fourth Proportional to 202,862.40, 304,228.80 and 84,505.20

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Solution

The fourth proportional to 202,862.40, 304,228.80 and 84,505.20 is: 126,730.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,862.40 : 304,228.80 = 84,505.20 : x
  2. Step 2: Convert to fraction form
    202,862.40/304,228.80 = 84,505.20/x
  3. Step 3: Cross multiply
    202,862.40x = 304,228.80 × 84,505.20
  4. Step 4: Simplify right side
    202,862.40x = 25,708,915,589.76
  5. Step 5: Solve for x
    x = 25,708,915,589.76/202,862.40
  6. Step 6: Final answer
    x = 126,730.81

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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.