Home / 398,110.20-549,383.85-216,825.31

Finding the Fourth Proportional to 398,110.20, 549,383.85 and 216,825.31

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Solution

The fourth proportional to 398,110.20, 549,383.85 and 216,825.31 is: 299,214.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,110.20 : 549,383.85 = 216,825.31 : x
  2. Step 2: Convert to fraction form
    398,110.20/549,383.85 = 216,825.31/x
  3. Step 3: Cross multiply
    398,110.20x = 549,383.85 × 216,825.31
  4. Step 4: Simplify right side
    398,110.20x = 119,120,323,585.24
  5. Step 5: Solve for x
    x = 119,120,323,585.24/398,110.20
  6. Step 6: Final answer
    x = 299,214.45

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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.