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Finding the Fourth Proportional to 499,387.48, 689,155.88 and 273,047.56

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Solution

The fourth proportional to 499,387.48, 689,155.88 and 273,047.56 is: 376,806.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,387.48 : 689,155.88 = 273,047.56 : x
  2. Step 2: Convert to fraction form
    499,387.48/689,155.88 = 273,047.56/x
  3. Step 3: Cross multiply
    499,387.48x = 689,155.88 × 273,047.56
  4. Step 4: Simplify right side
    499,387.48x = 188,172,331,493.65
  5. Step 5: Solve for x
    x = 188,172,331,493.65/499,387.48
  6. Step 6: Final answer
    x = 376,806.27

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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.