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Finding the Fourth Proportional to 225,331, 311,026.08 and 129,901.48

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Solution

The fourth proportional to 225,331, 311,026.08 and 129,901.48 is: 179,303.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,331 : 311,026.08 = 129,901.48 : x
  2. Step 2: Convert to fraction form
    225,331/311,026.08 = 129,901.48/x
  3. Step 3: Cross multiply
    225,331x = 311,026.08 × 129,901.48
  4. Step 4: Simplify right side
    225,331x = 40,402,748,110.60
  5. Step 5: Solve for x
    x = 40,402,748,110.60/225,331
  6. Step 6: Final answer
    x = 179,303.99

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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.