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Finding the Fourth Proportional to 225,063.60, 310,625.94 and 129,625.52

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Solution

The fourth proportional to 225,063.60, 310,625.94 and 129,625.52 is: 178,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,063.60 : 310,625.94 = 129,625.52 : x
  2. Step 2: Convert to fraction form
    225,063.60/310,625.94 = 129,625.52/x
  3. Step 3: Cross multiply
    225,063.60x = 310,625.94 × 129,625.52
  4. Step 4: Simplify right side
    225,063.60x = 40,265,048,997.99
  5. Step 5: Solve for x
    x = 40,265,048,997.99/225,063.60
  6. Step 6: Final answer
    x = 178,905.20

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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.