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Finding the Fourth Proportional to 345,449.79, 518,174.67 and 134,940.10

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Solution

The fourth proportional to 345,449.79, 518,174.67 and 134,940.10 is: 202,410.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,449.79 : 518,174.67 = 134,940.10 : x
  2. Step 2: Convert to fraction form
    345,449.79/518,174.67 = 134,940.10/x
  3. Step 3: Cross multiply
    345,449.79x = 518,174.67 × 134,940.10
  4. Step 4: Simplify right side
    345,449.79x = 69,922,541,787.27
  5. Step 5: Solve for x
    x = 69,922,541,787.27/345,449.79
  6. Step 6: Final answer
    x = 202,410.14

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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.