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Finding the Fourth Proportional to 382,032.45, 572,692.39 and 129,136.98

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Solution

The fourth proportional to 382,032.45, 572,692.39 and 129,136.98 is: 193,585.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,032.45 : 572,692.39 = 129,136.98 : x
  2. Step 2: Convert to fraction form
    382,032.45/572,692.39 = 129,136.98/x
  3. Step 3: Cross multiply
    382,032.45x = 572,692.39 × 129,136.98
  4. Step 4: Simplify right side
    382,032.45x = 73,955,765,713.58
  5. Step 5: Solve for x
    x = 73,955,765,713.58/382,032.45
  6. Step 6: Final answer
    x = 193,585.04

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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.