Home / 245,109.45-338,221.32-136,213.26

Finding the Fourth Proportional to 245,109.45, 338,221.32 and 136,213.26

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Solution

The fourth proportional to 245,109.45, 338,221.32 and 136,213.26 is: 187,957.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,109.45 : 338,221.32 = 136,213.26 : x
  2. Step 2: Convert to fraction form
    245,109.45/338,221.32 = 136,213.26/x
  3. Step 3: Cross multiply
    245,109.45x = 338,221.32 × 136,213.26
  4. Step 4: Simplify right side
    245,109.45x = 46,070,228,598.70
  5. Step 5: Solve for x
    x = 46,070,228,598.70/245,109.45
  6. Step 6: Final answer
    x = 187,957.78

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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.