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Finding the Fourth Proportional to 480,884.81, 721,471.64 and 143,936.46

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Solution

The fourth proportional to 480,884.81, 721,471.64 and 143,936.46 is: 215,947.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,884.81 : 721,471.64 = 143,936.46 : x
  2. Step 2: Convert to fraction form
    480,884.81/721,471.64 = 143,936.46/x
  3. Step 3: Cross multiply
    480,884.81x = 721,471.64 × 143,936.46
  4. Step 4: Simplify right side
    480,884.81x = 103,846,073,132.31
  5. Step 5: Solve for x
    x = 103,846,073,132.31/480,884.81
  6. Step 6: Final answer
    x = 215,947.92

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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.