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Finding the Fourth Proportional to 351,081.78, 526,637.70 and 137,895.90

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Solution

The fourth proportional to 351,081.78, 526,637.70 and 137,895.90 is: 206,849.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,081.78 : 526,637.70 = 137,895.90 : x
  2. Step 2: Convert to fraction form
    351,081.78/526,637.70 = 137,895.90/x
  3. Step 3: Cross multiply
    351,081.78x = 526,637.70 × 137,895.90
  4. Step 4: Simplify right side
    351,081.78x = 72,621,179,615.43
  5. Step 5: Solve for x
    x = 72,621,179,615.43/351,081.78
  6. Step 6: Final answer
    x = 206,849.75

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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.