Home / 252,680.78-378,416.91-145,740.55

Finding the Fourth Proportional to 252,680.78, 378,416.91 and 145,740.55

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Solution

The fourth proportional to 252,680.78, 378,416.91 and 145,740.55 is: 218,262.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,680.78 : 378,416.91 = 145,740.55 : x
  2. Step 2: Convert to fraction form
    252,680.78/378,416.91 = 145,740.55/x
  3. Step 3: Cross multiply
    252,680.78x = 378,416.91 × 145,740.55
  4. Step 4: Simplify right side
    252,680.78x = 55,150,688,592.70
  5. Step 5: Solve for x
    x = 55,150,688,592.70/252,680.78
  6. Step 6: Final answer
    x = 218,262.30

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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.