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Finding the Fourth Proportional to 499,636, 689,497.68 and 273,281.50

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Solution

The fourth proportional to 499,636, 689,497.68 and 273,281.50 is: 377,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,636 : 689,497.68 = 273,281.50 : x
  2. Step 2: Convert to fraction form
    499,636/689,497.68 = 273,281.50/x
  3. Step 3: Cross multiply
    499,636x = 689,497.68 × 273,281.50
  4. Step 4: Simplify right side
    499,636x = 188,426,960,236.92
  5. Step 5: Solve for x
    x = 188,426,960,236.92/499,636
  6. Step 6: Final answer
    x = 377,128.47

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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.