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Finding the Fourth Proportional to 398,195.96, 549,511.16 and 237,056.60

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Solution

The fourth proportional to 398,195.96, 549,511.16 and 237,056.60 is: 327,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,195.96 : 549,511.16 = 237,056.60 : x
  2. Step 2: Convert to fraction form
    398,195.96/549,511.16 = 237,056.60/x
  3. Step 3: Cross multiply
    398,195.96x = 549,511.16 × 237,056.60
  4. Step 4: Simplify right side
    398,195.96x = 130,265,247,251.66
  5. Step 5: Solve for x
    x = 130,265,247,251.66/398,195.96
  6. Step 6: Final answer
    x = 327,138.55

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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.