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Finding the Fourth Proportional to 351,803.03, 527,704.97 and 85,561.70

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Solution

The fourth proportional to 351,803.03, 527,704.97 and 85,561.70 is: 128,342.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,803.03 : 527,704.97 = 85,561.70 : x
  2. Step 2: Convert to fraction form
    351,803.03/527,704.97 = 85,561.70/x
  3. Step 3: Cross multiply
    351,803.03x = 527,704.97 × 85,561.70
  4. Step 4: Simplify right side
    351,803.03x = 45,151,331,265.32
  5. Step 5: Solve for x
    x = 45,151,331,265.32/351,803.03
  6. Step 6: Final answer
    x = 128,342.65

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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.