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Finding the Fourth Proportional to 228,619.73, 315,495.17 and 125,257.60

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Solution

The fourth proportional to 228,619.73, 315,495.17 and 125,257.60 is: 172,855.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,619.73 : 315,495.17 = 125,257.60 : x
  2. Step 2: Convert to fraction form
    228,619.73/315,495.17 = 125,257.60/x
  3. Step 3: Cross multiply
    228,619.73x = 315,495.17 × 125,257.60
  4. Step 4: Simplify right side
    228,619.73x = 39,518,167,805.79
  5. Step 5: Solve for x
    x = 39,518,167,805.79/228,619.73
  6. Step 6: Final answer
    x = 172,855.46

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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.