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Finding the Fourth Proportional to 499,913.70, 689,878.92 and 270,470.22

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Solution

The fourth proportional to 499,913.70, 689,878.92 and 270,470.22 is: 373,247.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,913.70 : 689,878.92 = 270,470.22 : x
  2. Step 2: Convert to fraction form
    499,913.70/689,878.92 = 270,470.22/x
  3. Step 3: Cross multiply
    499,913.70x = 689,878.92 × 270,470.22
  4. Step 4: Simplify right side
    499,913.70x = 186,591,703,265.76
  5. Step 5: Solve for x
    x = 186,591,703,265.76/499,913.70
  6. Step 6: Final answer
    x = 373,247.83

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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.