Home / 291,257.40-436,886.10-172,867.80

Finding the Fourth Proportional to 291,257.40, 436,886.10 and 172,867.80

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Solution

The fourth proportional to 291,257.40, 436,886.10 and 172,867.80 is: 259,301.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,257.40 : 436,886.10 = 172,867.80 : x
  2. Step 2: Convert to fraction form
    291,257.40/436,886.10 = 172,867.80/x
  3. Step 3: Cross multiply
    291,257.40x = 436,886.10 × 172,867.80
  4. Step 4: Simplify right side
    291,257.40x = 75,523,538,957.58
  5. Step 5: Solve for x
    x = 75,523,538,957.58/291,257.40
  6. Step 6: Final answer
    x = 259,301.70

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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.