Home / 245,256.21-338,449.05-137,824.70

Finding the Fourth Proportional to 245,256.21, 338,449.05 and 137,824.70

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Solution

The fourth proportional to 245,256.21, 338,449.05 and 137,824.70 is: 190,195.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,256.21 : 338,449.05 = 137,824.70 : x
  2. Step 2: Convert to fraction form
    245,256.21/338,449.05 = 137,824.70/x
  3. Step 3: Cross multiply
    245,256.21x = 338,449.05 × 137,824.70
  4. Step 4: Simplify right side
    245,256.21x = 46,646,637,089.29
  5. Step 5: Solve for x
    x = 46,646,637,089.29/245,256.21
  6. Step 6: Final answer
    x = 190,195.54

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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.