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Finding the Fourth Proportional to 489,692.12, 675,776.43 and 271,901.20

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Solution

The fourth proportional to 489,692.12, 675,776.43 and 271,901.20 is: 375,224.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,692.12 : 675,776.43 = 271,901.20 : x
  2. Step 2: Convert to fraction form
    489,692.12/675,776.43 = 271,901.20/x
  3. Step 3: Cross multiply
    489,692.12x = 675,776.43 × 271,901.20
  4. Step 4: Simplify right side
    489,692.12x = 183,744,417,510.33
  5. Step 5: Solve for x
    x = 183,744,417,510.33/489,692.12
  6. Step 6: Final answer
    x = 375,224.37

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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.