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Finding the Fourth Proportional to 398,348.70, 549,714.11 and 217,062.20

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Solution

The fourth proportional to 398,348.70, 549,714.11 and 217,062.20 is: 299,541.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,348.70 : 549,714.11 = 217,062.20 : x
  2. Step 2: Convert to fraction form
    398,348.70/549,714.11 = 217,062.20/x
  3. Step 3: Cross multiply
    398,348.70x = 549,714.11 × 217,062.20
  4. Step 4: Simplify right side
    398,348.70x = 119,322,150,253.76
  5. Step 5: Solve for x
    x = 119,322,150,253.76/398,348.70
  6. Step 6: Final answer
    x = 299,541.96

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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.