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Finding the Fourth Proportional to 297,781.80, 446,672.70 and 192,719.40

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Solution

The fourth proportional to 297,781.80, 446,672.70 and 192,719.40 is: 289,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,781.80 : 446,672.70 = 192,719.40 : x
  2. Step 2: Convert to fraction form
    297,781.80/446,672.70 = 192,719.40/x
  3. Step 3: Cross multiply
    297,781.80x = 446,672.70 × 192,719.40
  4. Step 4: Simplify right side
    297,781.80x = 86,082,494,740.38
  5. Step 5: Solve for x
    x = 86,082,494,740.38/297,781.80
  6. Step 6: Final answer
    x = 289,079.10

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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.