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Finding the Fourth Proportional to 261,786.12, 392,679.12 and 74,797.62

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Solution

The fourth proportional to 261,786.12, 392,679.12 and 74,797.62 is: 112,196.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,786.12 : 392,679.12 = 74,797.62 : x
  2. Step 2: Convert to fraction form
    261,786.12/392,679.12 = 74,797.62/x
  3. Step 3: Cross multiply
    261,786.12x = 392,679.12 × 74,797.62
  4. Step 4: Simplify right side
    261,786.12x = 29,371,463,599.69
  5. Step 5: Solve for x
    x = 29,371,463,599.69/261,786.12
  6. Step 6: Final answer
    x = 112,196.41

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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.