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Finding the Fourth Proportional to 220,686.64, 330,770.64 and 102,107.52

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Solution

The fourth proportional to 220,686.64, 330,770.64 and 102,107.52 is: 153,041.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,686.64 : 330,770.64 = 102,107.52 : x
  2. Step 2: Convert to fraction form
    220,686.64/330,770.64 = 102,107.52/x
  3. Step 3: Cross multiply
    220,686.64x = 330,770.64 × 102,107.52
  4. Step 4: Simplify right side
    220,686.64x = 33,774,169,739.21
  5. Step 5: Solve for x
    x = 33,774,169,739.21/220,686.64
  6. Step 6: Final answer
    x = 153,041.30

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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.