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Finding the Fourth Proportional to 238,170.19, 356,788.19 and 138,120.19

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Solution

The fourth proportional to 238,170.19, 356,788.19 and 138,120.19 is: 206,909.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,170.19 : 356,788.19 = 138,120.19 : x
  2. Step 2: Convert to fraction form
    238,170.19/356,788.19 = 138,120.19/x
  3. Step 3: Cross multiply
    238,170.19x = 356,788.19 × 138,120.19
  4. Step 4: Simplify right side
    238,170.19x = 49,279,653,275.89
  5. Step 5: Solve for x
    x = 49,279,653,275.89/238,170.19
  6. Step 6: Final answer
    x = 206,909.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.