Home / 342,109.07-472,091.44-189,138.34

Finding the Fourth Proportional to 342,109.07, 472,091.44 and 189,138.34

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Solution

The fourth proportional to 342,109.07, 472,091.44 and 189,138.34 is: 261,000.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,109.07 : 472,091.44 = 189,138.34 : x
  2. Step 2: Convert to fraction form
    342,109.07/472,091.44 = 189,138.34/x
  3. Step 3: Cross multiply
    342,109.07x = 472,091.44 × 189,138.34
  4. Step 4: Simplify right side
    342,109.07x = 89,290,591,761.71
  5. Step 5: Solve for x
    x = 89,290,591,761.71/342,109.07
  6. Step 6: Final answer
    x = 261,000.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.