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Finding the Fourth Proportional to 219,866.72, 329,848.47 and 125,141.47

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Solution

The fourth proportional to 219,866.72, 329,848.47 and 125,141.47 is: 187,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,866.72 : 329,848.47 = 125,141.47 : x
  2. Step 2: Convert to fraction form
    219,866.72/329,848.47 = 125,141.47/x
  3. Step 3: Cross multiply
    219,866.72x = 329,848.47 × 125,141.47
  4. Step 4: Simplify right side
    219,866.72x = 41,277,721,588.43
  5. Step 5: Solve for x
    x = 41,277,721,588.43/219,866.72
  6. Step 6: Final answer
    x = 187,739.75

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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.