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Finding the Fourth Proportional to 398,318.30, 549,672.30 and 217,031.73

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Solution

The fourth proportional to 398,318.30, 549,672.30 and 217,031.73 is: 299,500.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,318.30 : 549,672.30 = 217,031.73 : x
  2. Step 2: Convert to fraction form
    398,318.30/549,672.30 = 217,031.73/x
  3. Step 3: Cross multiply
    398,318.30x = 549,672.30 × 217,031.73
  4. Step 4: Simplify right side
    398,318.30x = 119,296,330,202.08
  5. Step 5: Solve for x
    x = 119,296,330,202.08/398,318.30
  6. Step 6: Final answer
    x = 299,500.00

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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.