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Finding the Fourth Proportional to 269,010.20, 403,472.10 and 81,978.20

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Solution

The fourth proportional to 269,010.20, 403,472.10 and 81,978.20 is: 122,954.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,010.20 : 403,472.10 = 81,978.20 : x
  2. Step 2: Convert to fraction form
    269,010.20/403,472.10 = 81,978.20/x
  3. Step 3: Cross multiply
    269,010.20x = 403,472.10 × 81,978.20
  4. Step 4: Simplify right side
    269,010.20x = 33,075,916,508.22
  5. Step 5: Solve for x
    x = 33,075,916,508.22/269,010.20
  6. Step 6: Final answer
    x = 122,954.14

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1.5x scale

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.