Home / 243,638.28-336,227.80-136,208.60

Finding the Fourth Proportional to 243,638.28, 336,227.80 and 136,208.60

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Solution

The fourth proportional to 243,638.28, 336,227.80 and 136,208.60 is: 187,971.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,638.28 : 336,227.80 = 136,208.60 : x
  2. Step 2: Convert to fraction form
    243,638.28/336,227.80 = 136,208.60/x
  3. Step 3: Cross multiply
    243,638.28x = 336,227.80 × 136,208.60
  4. Step 4: Simplify right side
    243,638.28x = 45,797,117,919.08
  5. Step 5: Solve for x
    x = 45,797,117,919.08/243,638.28
  6. Step 6: Final answer
    x = 187,971.77

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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.