Home / 245,132.78-338,246.39-137,682.23

Finding the Fourth Proportional to 245,132.78, 338,246.39 and 137,682.23

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Solution

The fourth proportional to 245,132.78, 338,246.39 and 137,682.23 is: 189,980.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,132.78 : 338,246.39 = 137,682.23 : x
  2. Step 2: Convert to fraction form
    245,132.78/338,246.39 = 137,682.23/x
  3. Step 3: Cross multiply
    245,132.78x = 338,246.39 × 137,682.23
  4. Step 4: Simplify right side
    245,132.78x = 46,570,514,885.01
  5. Step 5: Solve for x
    x = 46,570,514,885.01/245,132.78
  6. Step 6: Final answer
    x = 189,980.78

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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.