Home / 398,418.35-549,801.27-217,126.40

Finding the Fourth Proportional to 398,418.35, 549,801.27 and 217,126.40

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Solution

The fourth proportional to 398,418.35, 549,801.27 and 217,126.40 is: 299,625.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,418.35 : 549,801.27 = 217,126.40 : x
  2. Step 2: Convert to fraction form
    398,418.35/549,801.27 = 217,126.40/x
  3. Step 3: Cross multiply
    398,418.35x = 549,801.27 × 217,126.40
  4. Step 4: Simplify right side
    398,418.35x = 119,376,367,721.52
  5. Step 5: Solve for x
    x = 119,376,367,721.52/398,418.35
  6. Step 6: Final answer
    x = 299,625.68

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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.