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Finding the Fourth Proportional to 355,378.89, 532,989.74 and 102,604.42

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Solution

The fourth proportional to 355,378.89, 532,989.74 and 102,604.42 is: 153,883.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,378.89 : 532,989.74 = 102,604.42 : x
  2. Step 2: Convert to fraction form
    355,378.89/532,989.74 = 102,604.42/x
  3. Step 3: Cross multiply
    355,378.89x = 532,989.74 × 102,604.42
  4. Step 4: Simplify right side
    355,378.89x = 54,687,102,062.69
  5. Step 5: Solve for x
    x = 54,687,102,062.69/355,378.89
  6. Step 6: Final answer
    x = 153,883.94

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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.