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Finding the Fourth Proportional to 230,245.56, 317,734.05 and 128,270.88

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Solution

The fourth proportional to 230,245.56, 317,734.05 and 128,270.88 is: 177,011.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,245.56 : 317,734.05 = 128,270.88 : x
  2. Step 2: Convert to fraction form
    230,245.56/317,734.05 = 128,270.88/x
  3. Step 3: Cross multiply
    230,245.56x = 317,734.05 × 128,270.88
  4. Step 4: Simplify right side
    230,245.56x = 40,756,026,199.46
  5. Step 5: Solve for x
    x = 40,756,026,199.46/230,245.56
  6. Step 6: Final answer
    x = 177,011.13

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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.