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Finding the Fourth Proportional to 499,109.82, 688,771.84 and 272,755.32

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Solution

The fourth proportional to 499,109.82, 688,771.84 and 272,755.32 is: 376,402.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,109.82 : 688,771.84 = 272,755.32 : x
  2. Step 2: Convert to fraction form
    499,109.82/688,771.84 = 272,755.32/x
  3. Step 3: Cross multiply
    499,109.82x = 688,771.84 × 272,755.32
  4. Step 4: Simplify right side
    499,109.82x = 187,866,183,626.19
  5. Step 5: Solve for x
    x = 187,866,183,626.19/499,109.82
  6. Step 6: Final answer
    x = 376,402.50

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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.