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Finding the Fourth Proportional to 258,024.68, 387,080.82 and 80,527.76

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Solution

The fourth proportional to 258,024.68, 387,080.82 and 80,527.76 is: 120,805.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,024.68 : 387,080.82 = 80,527.76 : x
  2. Step 2: Convert to fraction form
    258,024.68/387,080.82 = 80,527.76/x
  3. Step 3: Cross multiply
    258,024.68x = 387,080.82 × 80,527.76
  4. Step 4: Simplify right side
    258,024.68x = 31,170,751,373.56
  5. Step 5: Solve for x
    x = 31,170,751,373.56/258,024.68
  6. Step 6: Final answer
    x = 120,805.31

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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.