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Finding the Fourth Proportional to 220,055.88, 330,080.28 and 70,295.20

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Solution

The fourth proportional to 220,055.88, 330,080.28 and 70,295.20 is: 105,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,055.88 : 330,080.28 = 70,295.20 : x
  2. Step 2: Convert to fraction form
    220,055.88/330,080.28 = 70,295.20/x
  3. Step 3: Cross multiply
    220,055.88x = 330,080.28 × 70,295.20
  4. Step 4: Simplify right side
    220,055.88x = 23,203,059,298.66
  5. Step 5: Solve for x
    x = 23,203,059,298.66/220,055.88
  6. Step 6: Final answer
    x = 105,441.67

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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.