Home / 245,387.08-338,635.64-137,956.20

Finding the Fourth Proportional to 245,387.08, 338,635.64 and 137,956.20

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Solution

The fourth proportional to 245,387.08, 338,635.64 and 137,956.20 is: 190,380.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,387.08 : 338,635.64 = 137,956.20 : x
  2. Step 2: Convert to fraction form
    245,387.08/338,635.64 = 137,956.20/x
  3. Step 3: Cross multiply
    245,387.08x = 338,635.64 × 137,956.20
  4. Step 4: Simplify right side
    245,387.08x = 46,716,886,078.97
  5. Step 5: Solve for x
    x = 46,716,886,078.97/245,387.08
  6. Step 6: Final answer
    x = 190,380.38

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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.