Home / 245,589.28-338,912.71-138,159.40

Finding the Fourth Proportional to 245,589.28, 338,912.71 and 138,159.40

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Solution

The fourth proportional to 245,589.28, 338,912.71 and 138,159.40 is: 190,659.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,589.28 : 338,912.71 = 138,159.40 : x
  2. Step 2: Convert to fraction form
    245,589.28/338,912.71 = 138,159.40/x
  3. Step 3: Cross multiply
    245,589.28x = 338,912.71 × 138,159.40
  4. Step 4: Simplify right side
    245,589.28x = 46,823,975,155.56
  5. Step 5: Solve for x
    x = 46,823,975,155.56/245,589.28
  6. Step 6: Final answer
    x = 190,659.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.