Home / 398,111.20-549,385.23-216,826.31

Finding the Fourth Proportional to 398,111.20, 549,385.23 and 216,826.31

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Solution

The fourth proportional to 398,111.20, 549,385.23 and 216,826.31 is: 299,215.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,111.20 : 549,385.23 = 216,826.31 : x
  2. Step 2: Convert to fraction form
    398,111.20/549,385.23 = 216,826.31/x
  3. Step 3: Cross multiply
    398,111.20x = 549,385.23 × 216,826.31
  4. Step 4: Simplify right side
    398,111.20x = 119,121,172,189.40
  5. Step 5: Solve for x
    x = 119,121,172,189.40/398,111.20
  6. Step 6: Final answer
    x = 299,215.83

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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.