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Finding the Fourth Proportional to 259,510.36, 389,213.66 and 72,523.48

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Solution

The fourth proportional to 259,510.36, 389,213.66 and 72,523.48 is: 108,770.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,510.36 : 389,213.66 = 72,523.48 : x
  2. Step 2: Convert to fraction form
    259,510.36/389,213.66 = 72,523.48/x
  3. Step 3: Cross multiply
    259,510.36x = 389,213.66 × 72,523.48
  4. Step 4: Simplify right side
    259,510.36x = 28,227,129,086.74
  5. Step 5: Solve for x
    x = 28,227,129,086.74/259,510.36
  6. Step 6: Final answer
    x = 108,770.72

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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.