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Finding the Fourth Proportional to 313,640.70, 469,683.45 and 251,432.70

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Solution

The fourth proportional to 313,640.70, 469,683.45 and 251,432.70 is: 376,525.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,640.70 : 469,683.45 = 251,432.70 : x
  2. Step 2: Convert to fraction form
    313,640.70/469,683.45 = 251,432.70/x
  3. Step 3: Cross multiply
    313,640.70x = 469,683.45 × 251,432.70
  4. Step 4: Simplify right side
    313,640.70x = 118,093,777,978.82
  5. Step 5: Solve for x
    x = 118,093,777,978.82/313,640.70
  6. Step 6: Final answer
    x = 376,525.68

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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.