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Finding the Fourth Proportional to 259,295, 389,008.08 and 72,306.56

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Solution

The fourth proportional to 259,295, 389,008.08 and 72,306.56 is: 108,478.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,295 : 389,008.08 = 72,306.56 : x
  2. Step 2: Convert to fraction form
    259,295/389,008.08 = 72,306.56/x
  3. Step 3: Cross multiply
    259,295x = 389,008.08 × 72,306.56
  4. Step 4: Simplify right side
    259,295x = 28,127,836,077.00
  5. Step 5: Solve for x
    x = 28,127,836,077.00/259,295
  6. Step 6: Final answer
    x = 108,478.13

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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.