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Finding the Fourth Proportional to 399,068.73, 550,726.46 and 217,792.32

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Solution

The fourth proportional to 399,068.73, 550,726.46 and 217,792.32 is: 300,559.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,068.73 : 550,726.46 = 217,792.32 : x
  2. Step 2: Convert to fraction form
    399,068.73/550,726.46 = 217,792.32/x
  3. Step 3: Cross multiply
    399,068.73x = 550,726.46 × 217,792.32
  4. Step 4: Simplify right side
    399,068.73x = 119,943,993,408.79
  5. Step 5: Solve for x
    x = 119,943,993,408.79/399,068.73
  6. Step 6: Final answer
    x = 300,559.74

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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.