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Finding the Fourth Proportional to 490,347, 676,687.74 and 272,576.04

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Solution

The fourth proportional to 490,347, 676,687.74 and 272,576.04 is: 376,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,347 : 676,687.74 = 272,576.04 : x
  2. Step 2: Convert to fraction form
    490,347/676,687.74 = 272,576.04/x
  3. Step 3: Cross multiply
    490,347x = 676,687.74 × 272,576.04
  4. Step 4: Simplify right side
    490,347x = 184,448,864,485.75
  5. Step 5: Solve for x
    x = 184,448,864,485.75/490,347
  6. Step 6: Final answer
    x = 376,159.87

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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.