Home / 261,865.85-392,971.02-143,620.22

Finding the Fourth Proportional to 261,865.85, 392,971.02 and 143,620.22

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Solution

The fourth proportional to 261,865.85, 392,971.02 and 143,620.22 is: 215,524.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,865.85 : 392,971.02 = 143,620.22 : x
  2. Step 2: Convert to fraction form
    261,865.85/392,971.02 = 143,620.22/x
  3. Step 3: Cross multiply
    261,865.85x = 392,971.02 × 143,620.22
  4. Step 4: Simplify right side
    261,865.85x = 56,438,582,381.17
  5. Step 5: Solve for x
    x = 56,438,582,381.17/261,865.85
  6. Step 6: Final answer
    x = 215,524.79

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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.