Home / 345,449.40-518,174.10-134,939.73

Finding the Fourth Proportional to 345,449.40, 518,174.10 and 134,939.73

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Solution

The fourth proportional to 345,449.40, 518,174.10 and 134,939.73 is: 202,409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,449.40 : 518,174.10 = 134,939.73 : x
  2. Step 2: Convert to fraction form
    345,449.40/518,174.10 = 134,939.73/x
  3. Step 3: Cross multiply
    345,449.40x = 518,174.10 × 134,939.73
  4. Step 4: Simplify right side
    345,449.40x = 69,922,273,146.99
  5. Step 5: Solve for x
    x = 69,922,273,146.99/345,449.40
  6. Step 6: Final answer
    x = 202,409.60

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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.