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Finding the Fourth Proportional to 295,788.72, 443,595.48 and 85,428.48

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Solution

The fourth proportional to 295,788.72, 443,595.48 and 85,428.48 is: 128,117.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,788.72 : 443,595.48 = 85,428.48 : x
  2. Step 2: Convert to fraction form
    295,788.72/443,595.48 = 85,428.48/x
  3. Step 3: Cross multiply
    295,788.72x = 443,595.48 × 85,428.48
  4. Step 4: Simplify right side
    295,788.72x = 37,895,687,591.27
  5. Step 5: Solve for x
    x = 37,895,687,591.27/295,788.72
  6. Step 6: Final answer
    x = 128,117.42

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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.