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Finding the Fourth Proportional to 638,162.45, 880,682.64 and 351,701

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Solution

The fourth proportional to 638,162.45, 880,682.64 and 351,701 is: 485,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,162.45 : 880,682.64 = 351,701 : x
  2. Step 2: Convert to fraction form
    638,162.45/880,682.64 = 351,701/x
  3. Step 3: Cross multiply
    638,162.45x = 880,682.64 × 351,701
  4. Step 4: Simplify right side
    638,162.45x = 309,736,965,170.64
  5. Step 5: Solve for x
    x = 309,736,965,170.64/638,162.45
  6. Step 6: Final answer
    x = 485,357.55

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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.