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Finding the Fourth Proportional to 258,874.50, 387,750.87 and 125,475.69

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Solution

The fourth proportional to 258,874.50, 387,750.87 and 125,475.69 is: 187,941.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,874.50 : 387,750.87 = 125,475.69 : x
  2. Step 2: Convert to fraction form
    258,874.50/387,750.87 = 125,475.69/x
  3. Step 3: Cross multiply
    258,874.50x = 387,750.87 × 125,475.69
  4. Step 4: Simplify right side
    258,874.50x = 48,653,307,961.35
  5. Step 5: Solve for x
    x = 48,653,307,961.35/258,874.50
  6. Step 6: Final answer
    x = 187,941.68

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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.