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Finding the Fourth Proportional to 456,505.80, 684,758.70 and 156,959.70

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Solution

The fourth proportional to 456,505.80, 684,758.70 and 156,959.70 is: 235,439.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,505.80 : 684,758.70 = 156,959.70 : x
  2. Step 2: Convert to fraction form
    456,505.80/684,758.70 = 156,959.70/x
  3. Step 3: Cross multiply
    456,505.80x = 684,758.70 × 156,959.70
  4. Step 4: Simplify right side
    456,505.80x = 107,479,520,124.39
  5. Step 5: Solve for x
    x = 107,479,520,124.39/456,505.80
  6. Step 6: Final answer
    x = 235,439.55

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Similar ratio
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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.