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Finding the Fourth Proportional to 238,749.63, 329,521.29 and 136,843.40

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Solution

The fourth proportional to 238,749.63, 329,521.29 and 136,843.40 is: 188,870.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,749.63 : 329,521.29 = 136,843.40 : x
  2. Step 2: Convert to fraction form
    238,749.63/329,521.29 = 136,843.40/x
  3. Step 3: Cross multiply
    238,749.63x = 329,521.29 × 136,843.40
  4. Step 4: Simplify right side
    238,749.63x = 45,092,812,048.38
  5. Step 5: Solve for x
    x = 45,092,812,048.38/238,749.63
  6. Step 6: Final answer
    x = 188,870.71

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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.