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Finding the Fourth Proportional to 625,889.76, 938,965.32 and 205,132.56

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Solution

The fourth proportional to 625,889.76, 938,965.32 and 205,132.56 is: 307,741.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,889.76 : 938,965.32 = 205,132.56 : x
  2. Step 2: Convert to fraction form
    625,889.76/938,965.32 = 205,132.56/x
  3. Step 3: Cross multiply
    625,889.76x = 938,965.32 × 205,132.56
  4. Step 4: Simplify right side
    625,889.76x = 192,612,359,842.82
  5. Step 5: Solve for x
    x = 192,612,359,842.82/625,889.76
  6. Step 6: Final answer
    x = 307,741.67

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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.