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Finding the Fourth Proportional to 528,888.33, 729,868.77 and 287,170.92

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Solution

The fourth proportional to 528,888.33, 729,868.77 and 287,170.92 is: 396,297.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,888.33 : 729,868.77 = 287,170.92 : x
  2. Step 2: Convert to fraction form
    528,888.33/729,868.77 = 287,170.92/x
  3. Step 3: Cross multiply
    528,888.33x = 729,868.77 × 287,170.92
  4. Step 4: Simplify right side
    528,888.33x = 209,597,086,160.17
  5. Step 5: Solve for x
    x = 209,597,086,160.17/528,888.33
  6. Step 6: Final answer
    x = 396,297.43

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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.