Home / 291,228.30-436,842.45-172,838.70

Finding the Fourth Proportional to 291,228.30, 436,842.45 and 172,838.70

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Solution

The fourth proportional to 291,228.30, 436,842.45 and 172,838.70 is: 259,258.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,228.30 : 436,842.45 = 172,838.70 : x
  2. Step 2: Convert to fraction form
    291,228.30/436,842.45 = 172,838.70/x
  3. Step 3: Cross multiply
    291,228.30x = 436,842.45 × 172,838.70
  4. Step 4: Simplify right side
    291,228.30x = 75,503,281,162.82
  5. Step 5: Solve for x
    x = 75,503,281,162.82/291,228.30
  6. Step 6: Final answer
    x = 259,258.05

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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.