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Finding the Fourth Proportional to 874,108.60, 1,311,000.90 and 242,891.80

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Solution

The fourth proportional to 874,108.60, 1,311,000.90 and 242,891.80 is: 364,292.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,108.60 : 1,311,000.90 = 242,891.80 : x
  2. Step 2: Convert to fraction form
    874,108.60/1,311,000.90 = 242,891.80/x
  3. Step 3: Cross multiply
    874,108.60x = 1,311,000.90 × 242,891.80
  4. Step 4: Simplify right side
    874,108.60x = 318,431,368,402.62
  5. Step 5: Solve for x
    x = 318,431,368,402.62/874,108.60
  6. Step 6: Final answer
    x = 364,292.68

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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.