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Finding the Fourth Proportional to 258,846.94, 387,745.53 and 133,925.50

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Solution

The fourth proportional to 258,846.94, 387,745.53 and 133,925.50 is: 200,616.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,846.94 : 387,745.53 = 133,925.50 : x
  2. Step 2: Convert to fraction form
    258,846.94/387,745.53 = 133,925.50/x
  3. Step 3: Cross multiply
    258,846.94x = 387,745.53 × 133,925.50
  4. Step 4: Simplify right side
    258,846.94x = 51,929,013,978.02
  5. Step 5: Solve for x
    x = 51,929,013,978.02/258,846.94
  6. Step 6: Final answer
    x = 200,616.68

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1.5x scale

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.