Home / 345,414.41-518,191.46-145,735.28

Finding the Fourth Proportional to 345,414.41, 518,191.46 and 145,735.28

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Solution

The fourth proportional to 345,414.41, 518,191.46 and 145,735.28 is: 218,632.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,414.41 : 518,191.46 = 145,735.28 : x
  2. Step 2: Convert to fraction form
    345,414.41/518,191.46 = 145,735.28/x
  3. Step 3: Cross multiply
    345,414.41x = 518,191.46 × 145,735.28
  4. Step 4: Simplify right side
    345,414.41x = 75,518,777,516.71
  5. Step 5: Solve for x
    x = 75,518,777,516.71/345,414.41
  6. Step 6: Final answer
    x = 218,632.39

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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.