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Finding the Fourth Proportional to 220,410.66, 330,647.13 and 70,615.91

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Solution

The fourth proportional to 220,410.66, 330,647.13 and 70,615.91 is: 105,933.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,410.66 : 330,647.13 = 70,615.91 : x
  2. Step 2: Convert to fraction form
    220,410.66/330,647.13 = 70,615.91/x
  3. Step 3: Cross multiply
    220,410.66x = 330,647.13 × 70,615.91
  4. Step 4: Simplify right side
    220,410.66x = 23,348,948,800.46
  5. Step 5: Solve for x
    x = 23,348,948,800.46/220,410.66
  6. Step 6: Final answer
    x = 105,933.84

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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.