Home / 398,517.24-549,945-217,222.20

Finding the Fourth Proportional to 398,517.24, 549,945 and 217,222.20

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Solution

The fourth proportional to 398,517.24, 549,945 and 217,222.20 is: 299,761.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,517.24 : 549,945 = 217,222.20 : x
  2. Step 2: Convert to fraction form
    398,517.24/549,945 = 217,222.20/x
  3. Step 3: Cross multiply
    398,517.24x = 549,945 × 217,222.20
  4. Step 4: Simplify right side
    398,517.24x = 119,460,262,779
  5. Step 5: Solve for x
    x = 119,460,262,779/398,517.24
  6. Step 6: Final answer
    x = 299,761.84

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1.5x scale

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.