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Finding the Fourth Proportional to 514,571.20, 771,856.80 and 159,621.10

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Solution

The fourth proportional to 514,571.20, 771,856.80 and 159,621.10 is: 239,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,571.20 : 771,856.80 = 159,621.10 : x
  2. Step 2: Convert to fraction form
    514,571.20/771,856.80 = 159,621.10/x
  3. Step 3: Cross multiply
    514,571.20x = 771,856.80 × 159,621.10
  4. Step 4: Simplify right side
    514,571.20x = 123,204,631,458.48
  5. Step 5: Solve for x
    x = 123,204,631,458.48/514,571.20
  6. Step 6: Final answer
    x = 239,431.65

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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.