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Finding the Fourth Proportional to 225,093.60, 310,655.96 and 129,618.90

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Solution

The fourth proportional to 225,093.60, 310,655.96 and 129,618.90 is: 178,889.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,093.60 : 310,655.96 = 129,618.90 : x
  2. Step 2: Convert to fraction form
    225,093.60/310,655.96 = 129,618.90/x
  3. Step 3: Cross multiply
    225,093.60x = 310,655.96 × 129,618.90
  4. Step 4: Simplify right side
    225,093.60x = 40,266,883,651.62
  5. Step 5: Solve for x
    x = 40,266,883,651.62/225,093.60
  6. Step 6: Final answer
    x = 178,889.51

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1.5x scale

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.