Home / 261,972.30-392,958.45-84,485.10

Finding the Fourth Proportional to 261,972.30, 392,958.45 and 84,485.10

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Solution

The fourth proportional to 261,972.30, 392,958.45 and 84,485.10 is: 126,727.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,972.30 : 392,958.45 = 84,485.10 : x
  2. Step 2: Convert to fraction form
    261,972.30/392,958.45 = 84,485.10/x
  3. Step 3: Cross multiply
    261,972.30x = 392,958.45 × 84,485.10
  4. Step 4: Simplify right side
    261,972.30x = 33,199,133,944.10
  5. Step 5: Solve for x
    x = 33,199,133,944.10/261,972.30
  6. Step 6: Final answer
    x = 126,727.65

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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.