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Finding the Fourth Proportional to 238,249.88, 328,784.84 and 137,647.88

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Solution

The fourth proportional to 238,249.88, 328,784.84 and 137,647.88 is: 189,954.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,249.88 : 328,784.84 = 137,647.88 : x
  2. Step 2: Convert to fraction form
    238,249.88/328,784.84 = 137,647.88/x
  3. Step 3: Cross multiply
    238,249.88x = 328,784.84 × 137,647.88
  4. Step 4: Simplify right side
    238,249.88x = 45,256,533,869.98
  5. Step 5: Solve for x
    x = 45,256,533,869.98/238,249.88
  6. Step 6: Final answer
    x = 189,954.07

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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.