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Finding the Fourth Proportional to 382,801.80, 528,124.17 and 382,211.31

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Solution

The fourth proportional to 382,801.80, 528,124.17 and 382,211.31 is: 527,309.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,801.80 : 528,124.17 = 382,211.31 : x
  2. Step 2: Convert to fraction form
    382,801.80/528,124.17 = 382,211.31/x
  3. Step 3: Cross multiply
    382,801.80x = 528,124.17 × 382,211.31
  4. Step 4: Simplify right side
    382,801.80x = 201,855,030,858.36
  5. Step 5: Solve for x
    x = 201,855,030,858.36/382,801.80
  6. Step 6: Final answer
    x = 527,309.51

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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.