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Finding the Fourth Proportional to 340,345.32, 510,517.86 and 91,020.84

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Solution

The fourth proportional to 340,345.32, 510,517.86 and 91,020.84 is: 136,531.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,345.32 : 510,517.86 = 91,020.84 : x
  2. Step 2: Convert to fraction form
    340,345.32/510,517.86 = 91,020.84/x
  3. Step 3: Cross multiply
    340,345.32x = 510,517.86 × 91,020.84
  4. Step 4: Simplify right side
    340,345.32x = 46,467,764,452.20
  5. Step 5: Solve for x
    x = 46,467,764,452.20/340,345.32
  6. Step 6: Final answer
    x = 136,531.23

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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.