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Finding the Fourth Proportional to 220,209.68, 303,893.36 and 124,736.20

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Solution

The fourth proportional to 220,209.68, 303,893.36 and 124,736.20 is: 172,138.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,209.68 : 303,893.36 = 124,736.20 : x
  2. Step 2: Convert to fraction form
    220,209.68/303,893.36 = 124,736.20/x
  3. Step 3: Cross multiply
    220,209.68x = 303,893.36 × 124,736.20
  4. Step 4: Simplify right side
    220,209.68x = 37,906,502,931.63
  5. Step 5: Solve for x
    x = 37,906,502,931.63/220,209.68
  6. Step 6: Final answer
    x = 172,138.22

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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.