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Finding the Fourth Proportional to 398,218.82, 549,535.61 and 216,932.92

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Solution

The fourth proportional to 398,218.82, 549,535.61 and 216,932.92 is: 299,363.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,218.82 : 549,535.61 = 216,932.92 : x
  2. Step 2: Convert to fraction form
    398,218.82/549,535.61 = 216,932.92/x
  3. Step 3: Cross multiply
    398,218.82x = 549,535.61 × 216,932.92
  4. Step 4: Simplify right side
    398,218.82x = 119,212,363,689.77
  5. Step 5: Solve for x
    x = 119,212,363,689.77/398,218.82
  6. Step 6: Final answer
    x = 299,363.97

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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.