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Finding the Fourth Proportional to 219,221.64, 302,539.86 and 123,693.48

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Solution

The fourth proportional to 219,221.64, 302,539.86 and 123,693.48 is: 170,704.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,221.64 : 302,539.86 = 123,693.48 : x
  2. Step 2: Convert to fraction form
    219,221.64/302,539.86 = 123,693.48/x
  3. Step 3: Cross multiply
    219,221.64x = 302,539.86 × 123,693.48
  4. Step 4: Simplify right side
    219,221.64x = 37,422,208,122.11
  5. Step 5: Solve for x
    x = 37,422,208,122.11/219,221.64
  6. Step 6: Final answer
    x = 170,704.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.