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Finding the Fourth Proportional to 398,308.89, 549,415.18 and 237,043.56

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Solution

The fourth proportional to 398,308.89, 549,415.18 and 237,043.56 is: 326,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,308.89 : 549,415.18 = 237,043.56 : x
  2. Step 2: Convert to fraction form
    398,308.89/549,415.18 = 237,043.56/x
  3. Step 3: Cross multiply
    398,308.89x = 549,415.18 × 237,043.56
  4. Step 4: Simplify right side
    398,308.89x = 130,235,326,845.56
  5. Step 5: Solve for x
    x = 130,235,326,845.56/398,308.89
  6. Step 6: Final answer
    x = 326,970.68

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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.