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Finding the Fourth Proportional to 499,357.28, 689,160.48 and 273,036.80

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Solution

The fourth proportional to 499,357.28, 689,160.48 and 273,036.80 is: 376,816.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,357.28 : 689,160.48 = 273,036.80 : x
  2. Step 2: Convert to fraction form
    499,357.28/689,160.48 = 273,036.80/x
  3. Step 3: Cross multiply
    499,357.28x = 689,160.48 × 273,036.80
  4. Step 4: Simplify right side
    499,357.28x = 188,166,172,145.66
  5. Step 5: Solve for x
    x = 188,166,172,145.66/499,357.28
  6. Step 6: Final answer
    x = 376,816.72

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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.