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Finding the Fourth Proportional to 220,462.28, 330,530.64 and 70,615.88

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Solution

The fourth proportional to 220,462.28, 330,530.64 and 70,615.88 is: 105,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,462.28 : 330,530.64 = 70,615.88 : x
  2. Step 2: Convert to fraction form
    220,462.28/330,530.64 = 70,615.88/x
  3. Step 3: Cross multiply
    220,462.28x = 330,530.64 × 70,615.88
  4. Step 4: Simplify right side
    220,462.28x = 23,340,712,010.56
  5. Step 5: Solve for x
    x = 23,340,712,010.56/220,462.28
  6. Step 6: Final answer
    x = 105,871.68

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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.