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Finding the Fourth Proportional to 499,352.26, 689,106 and 272,997.76

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Solution

The fourth proportional to 499,352.26, 689,106 and 272,997.76 is: 376,736.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,352.26 : 689,106 = 272,997.76 : x
  2. Step 2: Convert to fraction form
    499,352.26/689,106 = 272,997.76/x
  3. Step 3: Cross multiply
    499,352.26x = 689,106 × 272,997.76
  4. Step 4: Simplify right side
    499,352.26x = 188,124,394,402.56
  5. Step 5: Solve for x
    x = 188,124,394,402.56/499,352.26
  6. Step 6: Final answer
    x = 376,736.84

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1.5x scale

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.