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Finding the Fourth Proportional to 499,573, 689,411.28 and 273,219.04

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Solution

The fourth proportional to 499,573, 689,411.28 and 273,219.04 is: 377,042.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,573 : 689,411.28 = 273,219.04 : x
  2. Step 2: Convert to fraction form
    499,573/689,411.28 = 273,219.04/x
  3. Step 3: Cross multiply
    499,573x = 689,411.28 × 273,219.04
  4. Step 4: Simplify right side
    499,573x = 188,360,288,086.77
  5. Step 5: Solve for x
    x = 188,360,288,086.77/499,573
  6. Step 6: Final answer
    x = 377,042.57

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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.