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Finding the Fourth Proportional to 499,163, 688,844.91 and 272,808.50

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Solution

The fourth proportional to 499,163, 688,844.91 and 272,808.50 is: 376,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,163 : 688,844.91 = 272,808.50 : x
  2. Step 2: Convert to fraction form
    499,163/688,844.91 = 272,808.50/x
  3. Step 3: Cross multiply
    499,163x = 688,844.91 × 272,808.50
  4. Step 4: Simplify right side
    499,163x = 187,922,746,629.74
  5. Step 5: Solve for x
    x = 187,922,746,629.74/499,163
  6. Step 6: Final answer
    x = 376,475.71

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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.