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Finding the Fourth Proportional to 399,044.84, 550,664.72 and 217,752.26

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Solution

The fourth proportional to 399,044.84, 550,664.72 and 217,752.26 is: 300,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,044.84 : 550,664.72 = 217,752.26 : x
  2. Step 2: Convert to fraction form
    399,044.84/550,664.72 = 217,752.26/x
  3. Step 3: Cross multiply
    399,044.84x = 550,664.72 × 217,752.26
  4. Step 4: Simplify right side
    399,044.84x = 119,908,487,282.27
  5. Step 5: Solve for x
    x = 119,908,487,282.27/399,044.84
  6. Step 6: Final answer
    x = 300,488.76

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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.