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Finding the Fourth Proportional to 400,846.94, 553,169.01 and 219,561.91

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Solution

The fourth proportional to 400,846.94, 553,169.01 and 219,561.91 is: 302,995.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,846.94 : 553,169.01 = 219,561.91 : x
  2. Step 2: Convert to fraction form
    400,846.94/553,169.01 = 219,561.91/x
  3. Step 3: Cross multiply
    400,846.94x = 553,169.01 × 219,561.91
  4. Step 4: Simplify right side
    400,846.94x = 121,454,843,828.84
  5. Step 5: Solve for x
    x = 121,454,843,828.84/400,846.94
  6. Step 6: Final answer
    x = 302,995.56

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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.