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Finding the Fourth Proportional to 499,313.88, 689,053.50 and 272,959.56

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Solution

The fourth proportional to 499,313.88, 689,053.50 and 272,959.56 is: 376,684.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,313.88 : 689,053.50 = 272,959.56 : x
  2. Step 2: Convert to fraction form
    499,313.88/689,053.50 = 272,959.56/x
  3. Step 3: Cross multiply
    499,313.88x = 689,053.50 × 272,959.56
  4. Step 4: Simplify right side
    499,313.88x = 188,083,740,176.46
  5. Step 5: Solve for x
    x = 188,083,740,176.46/499,313.88
  6. Step 6: Final answer
    x = 376,684.38

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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.