Home / 261,634.20-392,451.30-258,869.40

Finding the Fourth Proportional to 261,634.20, 392,451.30 and 258,869.40

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Solution

The fourth proportional to 261,634.20, 392,451.30 and 258,869.40 is: 388,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,634.20 : 392,451.30 = 258,869.40 : x
  2. Step 2: Convert to fraction form
    261,634.20/392,451.30 = 258,869.40/x
  3. Step 3: Cross multiply
    261,634.20x = 392,451.30 × 258,869.40
  4. Step 4: Simplify right side
    261,634.20x = 101,593,632,560.22
  5. Step 5: Solve for x
    x = 101,593,632,560.22/261,634.20
  6. Step 6: Final answer
    x = 388,304.10

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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.