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Finding the Fourth Proportional to 552,705.20, 829,495.20 and 215,907.20

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Solution

The fourth proportional to 552,705.20, 829,495.20 and 215,907.20 is: 324,031.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,705.20 : 829,495.20 = 215,907.20 : x
  2. Step 2: Convert to fraction form
    552,705.20/829,495.20 = 215,907.20/x
  3. Step 3: Cross multiply
    552,705.20x = 829,495.20 × 215,907.20
  4. Step 4: Simplify right side
    552,705.20x = 179,093,986,045.44
  5. Step 5: Solve for x
    x = 179,093,986,045.44/552,705.20
  6. Step 6: Final answer
    x = 324,031.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.