Home / 398,209.90-549,585.89-226,170.76

Finding the Fourth Proportional to 398,209.90, 549,585.89 and 226,170.76

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Solution

The fourth proportional to 398,209.90, 549,585.89 and 226,170.76 is: 312,147.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,209.90 : 549,585.89 = 226,170.76 : x
  2. Step 2: Convert to fraction form
    398,209.90/549,585.89 = 226,170.76/x
  3. Step 3: Cross multiply
    398,209.90x = 549,585.89 × 226,170.76
  4. Step 4: Simplify right side
    398,209.90x = 124,300,256,769.90
  5. Step 5: Solve for x
    x = 124,300,256,769.90/398,209.90
  6. Step 6: Final answer
    x = 312,147.58

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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.