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Finding the Fourth Proportional to 398,339.24, 549,703.17 and 217,046.48

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Solution

The fourth proportional to 398,339.24, 549,703.17 and 217,046.48 is: 299,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,339.24 : 549,703.17 = 217,046.48 : x
  2. Step 2: Convert to fraction form
    398,339.24/549,703.17 = 217,046.48/x
  3. Step 3: Cross multiply
    398,339.24x = 549,703.17 × 217,046.48
  4. Step 4: Simplify right side
    398,339.24x = 119,311,135,344.83
  5. Step 5: Solve for x
    x = 119,311,135,344.83/398,339.24
  6. Step 6: Final answer
    x = 299,521.43

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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.