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Finding the Fourth Proportional to 198,207.60, 297,349.80 and 85,887.60

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Solution

The fourth proportional to 198,207.60, 297,349.80 and 85,887.60 is: 128,848.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,207.60 : 297,349.80 = 85,887.60 : x
  2. Step 2: Convert to fraction form
    198,207.60/297,349.80 = 85,887.60/x
  3. Step 3: Cross multiply
    198,207.60x = 297,349.80 × 85,887.60
  4. Step 4: Simplify right side
    198,207.60x = 25,538,660,682.48
  5. Step 5: Solve for x
    x = 25,538,660,682.48/198,207.60
  6. Step 6: Final answer
    x = 128,848.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.