Home / 261,882.20-392,564.10-128,653.40

Finding the Fourth Proportional to 261,882.20, 392,564.10 and 128,653.40

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Solution

The fourth proportional to 261,882.20, 392,564.10 and 128,653.40 is: 192,852.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,882.20 : 392,564.10 = 128,653.40 : x
  2. Step 2: Convert to fraction form
    261,882.20/392,564.10 = 128,653.40/x
  3. Step 3: Cross multiply
    261,882.20x = 392,564.10 × 128,653.40
  4. Step 4: Simplify right side
    261,882.20x = 50,504,706,182.94
  5. Step 5: Solve for x
    x = 50,504,706,182.94/261,882.20
  6. Step 6: Final answer
    x = 192,852.76

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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.