Home / 398,442.11-549,833.94-217,150.20

Finding the Fourth Proportional to 398,442.11, 549,833.94 and 217,150.20

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Solution

The fourth proportional to 398,442.11, 549,833.94 and 217,150.20 is: 299,658.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,442.11 : 549,833.94 = 217,150.20 : x
  2. Step 2: Convert to fraction form
    398,442.11/549,833.94 = 217,150.20/x
  3. Step 3: Cross multiply
    398,442.11x = 549,833.94 × 217,150.20
  4. Step 4: Simplify right side
    398,442.11x = 119,396,550,037.79
  5. Step 5: Solve for x
    x = 119,396,550,037.79/398,442.11
  6. Step 6: Final answer
    x = 299,658.47

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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.