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Finding the Fourth Proportional to 259,659.60, 389,270.70 and 135,000.60

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Solution

The fourth proportional to 259,659.60, 389,270.70 and 135,000.60 is: 202,387.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,659.60 : 389,270.70 = 135,000.60 : x
  2. Step 2: Convert to fraction form
    259,659.60/389,270.70 = 135,000.60/x
  3. Step 3: Cross multiply
    259,659.60x = 389,270.70 × 135,000.60
  4. Step 4: Simplify right side
    259,659.60x = 52,551,778,062.42
  5. Step 5: Solve for x
    x = 52,551,778,062.42/259,659.60
  6. Step 6: Final answer
    x = 202,387.19

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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.