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Finding the Fourth Proportional to 398,272.88, 549,600.72 and 216,986.24

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Solution

The fourth proportional to 398,272.88, 549,600.72 and 216,986.24 is: 299,432.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,272.88 : 549,600.72 = 216,986.24 : x
  2. Step 2: Convert to fraction form
    398,272.88/549,600.72 = 216,986.24/x
  3. Step 3: Cross multiply
    398,272.88x = 549,600.72 × 216,986.24
  4. Step 4: Simplify right side
    398,272.88x = 119,255,793,734.09
  5. Step 5: Solve for x
    x = 119,255,793,734.09/398,272.88
  6. Step 6: Final answer
    x = 299,432.37

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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.