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Finding the Fourth Proportional to 313,035.20, 469,207.20 and 172,894.40

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Solution

The fourth proportional to 313,035.20, 469,207.20 and 172,894.40 is: 259,150.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,035.20 : 469,207.20 = 172,894.40 : x
  2. Step 2: Convert to fraction form
    313,035.20/469,207.20 = 172,894.40/x
  3. Step 3: Cross multiply
    313,035.20x = 469,207.20 × 172,894.40
  4. Step 4: Simplify right side
    313,035.20x = 81,123,297,319.68
  5. Step 5: Solve for x
    x = 81,123,297,319.68/313,035.20
  6. Step 6: Final answer
    x = 259,150.72

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1.5x scale

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.