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Finding the Fourth Proportional to 258,496.67, 387,745.14 and 118,156.88

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Solution

The fourth proportional to 258,496.67, 387,745.14 and 118,156.88 is: 177,235.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,496.67 : 387,745.14 = 118,156.88 : x
  2. Step 2: Convert to fraction form
    258,496.67/387,745.14 = 118,156.88/x
  3. Step 3: Cross multiply
    258,496.67x = 387,745.14 × 118,156.88
  4. Step 4: Simplify right side
    258,496.67x = 45,814,754,038.84
  5. Step 5: Solve for x
    x = 45,814,754,038.84/258,496.67
  6. Step 6: Final answer
    x = 177,235.38

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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.