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Finding the Fourth Proportional to 225,063.20, 310,549.20 and 140,206.88

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Solution

The fourth proportional to 225,063.20, 310,549.20 and 140,206.88 is: 193,461.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,063.20 : 310,549.20 = 140,206.88 : x
  2. Step 2: Convert to fraction form
    225,063.20/310,549.20 = 140,206.88/x
  3. Step 3: Cross multiply
    225,063.20x = 310,549.20 × 140,206.88
  4. Step 4: Simplify right side
    225,063.20x = 43,541,134,418.50
  5. Step 5: Solve for x
    x = 43,541,134,418.50/225,063.20
  6. Step 6: Final answer
    x = 193,461.81

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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.