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Finding the Fourth Proportional to 220,119.93, 330,163.77 and 70,320

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Solution

The fourth proportional to 220,119.93, 330,163.77 and 70,320 is: 105,474.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,119.93 : 330,163.77 = 70,320 : x
  2. Step 2: Convert to fraction form
    220,119.93/330,163.77 = 70,320/x
  3. Step 3: Cross multiply
    220,119.93x = 330,163.77 × 70,320
  4. Step 4: Simplify right side
    220,119.93x = 23,217,116,306.40
  5. Step 5: Solve for x
    x = 23,217,116,306.40/220,119.93
  6. Step 6: Final answer
    x = 105,474.85

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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.