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Finding the Fourth Proportional to 340,780.75, 511,263.16 and 104,116.97

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Solution

The fourth proportional to 340,780.75, 511,263.16 and 104,116.97 is: 156,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,780.75 : 511,263.16 = 104,116.97 : x
  2. Step 2: Convert to fraction form
    340,780.75/511,263.16 = 104,116.97/x
  3. Step 3: Cross multiply
    340,780.75x = 511,263.16 × 104,116.97
  4. Step 4: Simplify right side
    340,780.75x = 53,231,172,109.69
  5. Step 5: Solve for x
    x = 53,231,172,109.69/340,780.75
  6. Step 6: Final answer
    x = 156,203.58

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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.