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Finding the Fourth Proportional to 407,321.10, 611,200.35 and 170,687.70

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Solution

The fourth proportional to 407,321.10, 611,200.35 and 170,687.70 is: 256,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,321.10 : 611,200.35 = 170,687.70 : x
  2. Step 2: Convert to fraction form
    407,321.10/611,200.35 = 170,687.70/x
  3. Step 3: Cross multiply
    407,321.10x = 611,200.35 × 170,687.70
  4. Step 4: Simplify right side
    407,321.10x = 104,324,381,980.70
  5. Step 5: Solve for x
    x = 104,324,381,980.70/407,321.10
  6. Step 6: Final answer
    x = 256,123.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.