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Finding the Fourth Proportional to 499,740.77, 689,658.56 and 273,386.27

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Solution

The fourth proportional to 499,740.77, 689,658.56 and 273,386.27 is: 377,281.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,740.77 : 689,658.56 = 273,386.27 : x
  2. Step 2: Convert to fraction form
    499,740.77/689,658.56 = 273,386.27/x
  3. Step 3: Cross multiply
    499,740.77x = 689,658.56 × 273,386.27
  4. Step 4: Simplify right side
    499,740.77x = 188,543,176,476.75
  5. Step 5: Solve for x
    x = 188,543,176,476.75/499,740.77
  6. Step 6: Final answer
    x = 377,281.96

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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.