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Finding the Fourth Proportional to 535,954.72, 739,589.76 and 318,172.48

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Solution

The fourth proportional to 535,954.72, 739,589.76 and 318,172.48 is: 439,061.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,954.72 : 739,589.76 = 318,172.48 : x
  2. Step 2: Convert to fraction form
    535,954.72/739,589.76 = 318,172.48/x
  3. Step 3: Cross multiply
    535,954.72x = 739,589.76 × 318,172.48
  4. Step 4: Simplify right side
    535,954.72x = 235,317,108,121.81
  5. Step 5: Solve for x
    x = 235,317,108,121.81/535,954.72
  6. Step 6: Final answer
    x = 439,061.55

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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.