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Finding the Fourth Proportional to 399,058.82, 550,684.06 and 217,766.24

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Solution

The fourth proportional to 399,058.82, 550,684.06 and 217,766.24 is: 300,508.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,058.82 : 550,684.06 = 217,766.24 : x
  2. Step 2: Convert to fraction form
    399,058.82/550,684.06 = 217,766.24/x
  3. Step 3: Cross multiply
    399,058.82x = 550,684.06 × 217,766.24
  4. Step 4: Simplify right side
    399,058.82x = 119,920,397,174.13
  5. Step 5: Solve for x
    x = 119,920,397,174.13/399,058.82
  6. Step 6: Final answer
    x = 300,508.07

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1.5x scale

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.