Home / 261,268.20-391,246.20-172,038.60

Finding the Fourth Proportional to 261,268.20, 391,246.20 and 172,038.60

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Solution

The fourth proportional to 261,268.20, 391,246.20 and 172,038.60 is: 257,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,268.20 : 391,246.20 = 172,038.60 : x
  2. Step 2: Convert to fraction form
    261,268.20/391,246.20 = 172,038.60/x
  3. Step 3: Cross multiply
    261,268.20x = 391,246.20 × 172,038.60
  4. Step 4: Simplify right side
    261,268.20x = 67,309,448,503.32
  5. Step 5: Solve for x
    x = 67,309,448,503.32/261,268.20
  6. Step 6: Final answer
    x = 257,625.87

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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.