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Finding the Fourth Proportional to 385,375.22, 531,827.25 and 215,620.34

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Solution

The fourth proportional to 385,375.22, 531,827.25 and 215,620.34 is: 297,561.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,375.22 : 531,827.25 = 215,620.34 : x
  2. Step 2: Convert to fraction form
    385,375.22/531,827.25 = 215,620.34/x
  3. Step 3: Cross multiply
    385,375.22x = 531,827.25 × 215,620.34
  4. Step 4: Simplify right side
    385,375.22x = 114,672,772,466.27
  5. Step 5: Solve for x
    x = 114,672,772,466.27/385,375.22
  6. Step 6: Final answer
    x = 297,561.35

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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.