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Finding the Fourth Proportional to 225,240.57, 310,801.94 and 129,728.82

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Solution

The fourth proportional to 225,240.57, 310,801.94 and 129,728.82 is: 179,008.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,240.57 : 310,801.94 = 129,728.82 : x
  2. Step 2: Convert to fraction form
    225,240.57/310,801.94 = 129,728.82/x
  3. Step 3: Cross multiply
    225,240.57x = 310,801.94 × 129,728.82
  4. Step 4: Simplify right side
    225,240.57x = 40,319,966,946.00
  5. Step 5: Solve for x
    x = 40,319,966,946.00/225,240.57
  6. Step 6: Final answer
    x = 179,008.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.