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Finding the Fourth Proportional to 499,009.50, 688,637.97 and 272,655

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Solution

The fourth proportional to 499,009.50, 688,637.97 and 272,655 is: 376,266.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,009.50 : 688,637.97 = 272,655 : x
  2. Step 2: Convert to fraction form
    499,009.50/688,637.97 = 272,655/x
  3. Step 3: Cross multiply
    499,009.50x = 688,637.97 × 272,655
  4. Step 4: Simplify right side
    499,009.50x = 187,760,585,710.35
  5. Step 5: Solve for x
    x = 187,760,585,710.35/499,009.50
  6. Step 6: Final answer
    x = 376,266.56

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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.