Home / 261,904.50-361,411.20-154,449.90

Finding the Fourth Proportional to 261,904.50, 361,411.20 and 154,449.90

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Solution

The fourth proportional to 261,904.50, 361,411.20 and 154,449.90 is: 213,130.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,904.50 : 361,411.20 = 154,449.90 : x
  2. Step 2: Convert to fraction form
    261,904.50/361,411.20 = 154,449.90/x
  3. Step 3: Cross multiply
    261,904.50x = 361,411.20 × 154,449.90
  4. Step 4: Simplify right side
    261,904.50x = 55,819,923,698.88
  5. Step 5: Solve for x
    x = 55,819,923,698.88/261,904.50
  6. Step 6: Final answer
    x = 213,130.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.