Home / 261,512.20-392,268.30-71,972.20

Finding the Fourth Proportional to 261,512.20, 392,268.30 and 71,972.20

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Solution

The fourth proportional to 261,512.20, 392,268.30 and 71,972.20 is: 107,958.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,512.20 : 392,268.30 = 71,972.20 : x
  2. Step 2: Convert to fraction form
    261,512.20/392,268.30 = 71,972.20/x
  3. Step 3: Cross multiply
    261,512.20x = 392,268.30 × 71,972.20
  4. Step 4: Simplify right side
    261,512.20x = 28,232,412,541.26
  5. Step 5: Solve for x
    x = 28,232,412,541.26/261,512.20
  6. Step 6: Final answer
    x = 107,958.30

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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.