Home / 516,947.40-775,421.37-161,989.20

Finding the Fourth Proportional to 516,947.40, 775,421.37 and 161,989.20

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Solution

The fourth proportional to 516,947.40, 775,421.37 and 161,989.20 is: 242,983.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,947.40 : 775,421.37 = 161,989.20 : x
  2. Step 2: Convert to fraction form
    516,947.40/775,421.37 = 161,989.20/x
  3. Step 3: Cross multiply
    516,947.40x = 775,421.37 × 161,989.20
  4. Step 4: Simplify right side
    516,947.40x = 125,609,887,389.20
  5. Step 5: Solve for x
    x = 125,609,887,389.20/516,947.40
  6. Step 6: Final answer
    x = 242,983.88

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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.