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Finding the Fourth Proportional to 269,918.98, 372,486 and 149,068.42

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Solution

The fourth proportional to 269,918.98, 372,486 and 149,068.42 is: 205,713.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,918.98 : 372,486 = 149,068.42 : x
  2. Step 2: Convert to fraction form
    269,918.98/372,486 = 149,068.42/x
  3. Step 3: Cross multiply
    269,918.98x = 372,486 × 149,068.42
  4. Step 4: Simplify right side
    269,918.98x = 55,525,899,492.12
  5. Step 5: Solve for x
    x = 55,525,899,492.12/269,918.98
  6. Step 6: Final answer
    x = 205,713.21

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1.5x scale

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.