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Finding the Fourth Proportional to 238,215.78, 328,743 and 136,250.64

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Solution

The fourth proportional to 238,215.78, 328,743 and 136,250.64 is: 188,028.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,215.78 : 328,743 = 136,250.64 : x
  2. Step 2: Convert to fraction form
    238,215.78/328,743 = 136,250.64/x
  3. Step 3: Cross multiply
    238,215.78x = 328,743 × 136,250.64
  4. Step 4: Simplify right side
    238,215.78x = 44,791,444,145.52
  5. Step 5: Solve for x
    x = 44,791,444,145.52/238,215.78
  6. Step 6: Final answer
    x = 188,028.87

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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.