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Finding the Fourth Proportional to 238,558.82, 329,211.90 and 131,139.86

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Solution

The fourth proportional to 238,558.82, 329,211.90 and 131,139.86 is: 180,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,558.82 : 329,211.90 = 131,139.86 : x
  2. Step 2: Convert to fraction form
    238,558.82/329,211.90 = 131,139.86/x
  3. Step 3: Cross multiply
    238,558.82x = 329,211.90 × 131,139.86
  4. Step 4: Simplify right side
    238,558.82x = 43,172,800,830.27
  5. Step 5: Solve for x
    x = 43,172,800,830.27/238,558.82
  6. Step 6: Final answer
    x = 180,973.40

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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.