Home / 398,519.64-549,947.34-217,236.60

Finding the Fourth Proportional to 398,519.64, 549,947.34 and 217,236.60

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Solution

The fourth proportional to 398,519.64, 549,947.34 and 217,236.60 is: 299,781.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,519.64 : 549,947.34 = 217,236.60 : x
  2. Step 2: Convert to fraction form
    398,519.64/549,947.34 = 217,236.60/x
  3. Step 3: Cross multiply
    398,519.64x = 549,947.34 × 217,236.60
  4. Step 4: Simplify right side
    398,519.64x = 119,468,690,320.64
  5. Step 5: Solve for x
    x = 119,468,690,320.64/398,519.64
  6. Step 6: Final answer
    x = 299,781.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.