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Finding the Fourth Proportional to 259,748.60, 389,635.70 and 135,332.60

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Solution

The fourth proportional to 259,748.60, 389,635.70 and 135,332.60 is: 203,005.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,748.60 : 389,635.70 = 135,332.60 : x
  2. Step 2: Convert to fraction form
    259,748.60/389,635.70 = 135,332.60/x
  3. Step 3: Cross multiply
    259,748.60x = 389,635.70 × 135,332.60
  4. Step 4: Simplify right side
    259,748.60x = 52,730,412,333.82
  5. Step 5: Solve for x
    x = 52,730,412,333.82/259,748.60
  6. Step 6: Final answer
    x = 203,005.57

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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.