Home / 245,220.68-338,434.77-137,788.38

Finding the Fourth Proportional to 245,220.68, 338,434.77 and 137,788.38

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Solution

The fourth proportional to 245,220.68, 338,434.77 and 137,788.38 is: 190,164.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,220.68 : 338,434.77 = 137,788.38 : x
  2. Step 2: Convert to fraction form
    245,220.68/338,434.77 = 137,788.38/x
  3. Step 3: Cross multiply
    245,220.68x = 338,434.77 × 137,788.38
  4. Step 4: Simplify right side
    245,220.68x = 46,632,377,001.80
  5. Step 5: Solve for x
    x = 46,632,377,001.80/245,220.68
  6. Step 6: Final answer
    x = 190,164.94

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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.