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Finding the Fourth Proportional to 499,292.50, 689,026.11 and 272,938

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Solution

The fourth proportional to 499,292.50, 689,026.11 and 272,938 is: 376,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,292.50 : 689,026.11 = 272,938 : x
  2. Step 2: Convert to fraction form
    499,292.50/689,026.11 = 272,938/x
  3. Step 3: Cross multiply
    499,292.50x = 689,026.11 × 272,938
  4. Step 4: Simplify right side
    499,292.50x = 188,061,408,411.18
  5. Step 5: Solve for x
    x = 188,061,408,411.18/499,292.50
  6. Step 6: Final answer
    x = 376,655.78

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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.