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Finding the Fourth Proportional to 499,834.73, 689,768.80 and 270,391.10

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Solution

The fourth proportional to 499,834.73, 689,768.80 and 270,391.10 is: 373,138.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,834.73 : 689,768.80 = 270,391.10 : x
  2. Step 2: Convert to fraction form
    499,834.73/689,768.80 = 270,391.10/x
  3. Step 3: Cross multiply
    499,834.73x = 689,768.80 × 270,391.10
  4. Step 4: Simplify right side
    499,834.73x = 186,507,340,452.86
  5. Step 5: Solve for x
    x = 186,507,340,452.86/499,834.73
  6. Step 6: Final answer
    x = 373,138.02

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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.