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Finding the Fourth Proportional to 343,680.72, 515,313.99 and 154,106.77

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Solution

The fourth proportional to 343,680.72, 515,313.99 and 154,106.77 is: 231,067.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,680.72 : 515,313.99 = 154,106.77 : x
  2. Step 2: Convert to fraction form
    343,680.72/515,313.99 = 154,106.77/x
  3. Step 3: Cross multiply
    343,680.72x = 515,313.99 × 154,106.77
  4. Step 4: Simplify right side
    343,680.72x = 79,413,374,534.71
  5. Step 5: Solve for x
    x = 79,413,374,534.71/343,680.72
  6. Step 6: Final answer
    x = 231,067.30

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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.