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Finding the Fourth Proportional to 258,397.92, 387,761.04 and 133,738.92

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Solution

The fourth proportional to 258,397.92, 387,761.04 and 133,738.92 is: 200,693.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,397.92 : 387,761.04 = 133,738.92 : x
  2. Step 2: Convert to fraction form
    258,397.92/387,761.04 = 133,738.92/x
  3. Step 3: Cross multiply
    258,397.92x = 387,761.04 × 133,738.92
  4. Step 4: Simplify right side
    258,397.92x = 51,858,742,707.68
  5. Step 5: Solve for x
    x = 51,858,742,707.68/258,397.92
  6. Step 6: Final answer
    x = 200,693.34

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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.