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Finding the Fourth Proportional to 305,520.11, 458,170.81 and 105,786.87

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Solution

The fourth proportional to 305,520.11, 458,170.81 and 105,786.87 is: 158,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,520.11 : 458,170.81 = 105,786.87 : x
  2. Step 2: Convert to fraction form
    305,520.11/458,170.81 = 105,786.87/x
  3. Step 3: Cross multiply
    305,520.11x = 458,170.81 × 105,786.87
  4. Step 4: Simplify right side
    305,520.11x = 48,468,455,915.26
  5. Step 5: Solve for x
    x = 48,468,455,915.26/305,520.11
  6. Step 6: Final answer
    x = 158,642.44

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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.