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Finding the Fourth Proportional to 343,400.34, 515,104.85 and 130,110.97

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Solution

The fourth proportional to 343,400.34, 515,104.85 and 130,110.97 is: 195,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,400.34 : 515,104.85 = 130,110.97 : x
  2. Step 2: Convert to fraction form
    343,400.34/515,104.85 = 130,110.97/x
  3. Step 3: Cross multiply
    343,400.34x = 515,104.85 × 130,110.97
  4. Step 4: Simplify right side
    343,400.34x = 67,020,792,897.68
  5. Step 5: Solve for x
    x = 67,020,792,897.68/343,400.34
  6. Step 6: Final answer
    x = 195,168.10

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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.