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Finding the Fourth Proportional to 398,380.55, 549,757.85 and 217,094.04

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Solution

The fourth proportional to 398,380.55, 549,757.85 and 217,094.04 is: 299,585.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,380.55 : 549,757.85 = 217,094.04 : x
  2. Step 2: Convert to fraction form
    398,380.55/549,757.85 = 217,094.04/x
  3. Step 3: Cross multiply
    398,380.55x = 549,757.85 × 217,094.04
  4. Step 4: Simplify right side
    398,380.55x = 119,349,151,592.74
  5. Step 5: Solve for x
    x = 119,349,151,592.74/398,380.55
  6. Step 6: Final answer
    x = 299,585.79

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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.