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Finding the Fourth Proportional to 499,921.48, 689,891.70 and 273,567

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Solution

The fourth proportional to 499,921.48, 689,891.70 and 273,567 is: 377,522.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,921.48 : 689,891.70 = 273,567 : x
  2. Step 2: Convert to fraction form
    499,921.48/689,891.70 = 273,567/x
  3. Step 3: Cross multiply
    499,921.48x = 689,891.70 × 273,567
  4. Step 4: Simplify right side
    499,921.48x = 188,731,602,693.90
  5. Step 5: Solve for x
    x = 188,731,602,693.90/499,921.48
  6. Step 6: Final answer
    x = 377,522.49

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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.