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Finding the Fourth Proportional to 258,658.73, 387,427.32 and 125,259.25

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Solution

The fourth proportional to 258,658.73, 387,427.32 and 125,259.25 is: 187,617.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,658.73 : 387,427.32 = 125,259.25 : x
  2. Step 2: Convert to fraction form
    258,658.73/387,427.32 = 125,259.25/x
  3. Step 3: Cross multiply
    258,658.73x = 387,427.32 × 125,259.25
  4. Step 4: Simplify right side
    258,658.73x = 48,528,854,564.14
  5. Step 5: Solve for x
    x = 48,528,854,564.14/258,658.73
  6. Step 6: Final answer
    x = 187,617.31

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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.