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Finding the Fourth Proportional to 313,640.20, 469,682.70 and 251,432.20

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Solution

The fourth proportional to 313,640.20, 469,682.70 and 251,432.20 is: 376,524.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,640.20 : 469,682.70 = 251,432.20 : x
  2. Step 2: Convert to fraction form
    313,640.20/469,682.70 = 251,432.20/x
  3. Step 3: Cross multiply
    313,640.20x = 469,682.70 × 251,432.20
  4. Step 4: Simplify right side
    313,640.20x = 118,093,354,562.94
  5. Step 5: Solve for x
    x = 118,093,354,562.94/313,640.20
  6. Step 6: Final answer
    x = 376,524.93

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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.