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Finding the Fourth Proportional to 398,288.95, 549,387.60 and 237,023.62

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Solution

The fourth proportional to 398,288.95, 549,387.60 and 237,023.62 is: 326,943.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,288.95 : 549,387.60 = 237,023.62 : x
  2. Step 2: Convert to fraction form
    398,288.95/549,387.60 = 237,023.62/x
  3. Step 3: Cross multiply
    398,288.95x = 549,387.60 × 237,023.62
  4. Step 4: Simplify right side
    398,288.95x = 130,217,835,472.80
  5. Step 5: Solve for x
    x = 130,217,835,472.80/398,288.95
  6. Step 6: Final answer
    x = 326,943.13

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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.