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Finding the Fourth Proportional to 340,780.46, 511,170.60 and 91,462.46

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Solution

The fourth proportional to 340,780.46, 511,170.60 and 91,462.46 is: 137,193.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,780.46 : 511,170.60 = 91,462.46 : x
  2. Step 2: Convert to fraction form
    340,780.46/511,170.60 = 91,462.46/x
  3. Step 3: Cross multiply
    340,780.46x = 511,170.60 × 91,462.46
  4. Step 4: Simplify right side
    340,780.46x = 46,752,917,999.82
  5. Step 5: Solve for x
    x = 46,752,917,999.82/340,780.46
  6. Step 6: Final answer
    x = 137,193.66

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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.