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Finding the Fourth Proportional to 258,761.92, 388,142.72 and 116,440.80

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Solution

The fourth proportional to 258,761.92, 388,142.72 and 116,440.80 is: 174,661.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,761.92 : 388,142.72 = 116,440.80 : x
  2. Step 2: Convert to fraction form
    258,761.92/388,142.72 = 116,440.80/x
  3. Step 3: Cross multiply
    258,761.92x = 388,142.72 × 116,440.80
  4. Step 4: Simplify right side
    258,761.92x = 45,195,648,830.98
  5. Step 5: Solve for x
    x = 45,195,648,830.98/258,761.92
  6. Step 6: Final answer
    x = 174,661.13

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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.