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Finding the Fourth Proportional to 340,396.44, 510,555.72 and 91,097.88

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Solution

The fourth proportional to 340,396.44, 510,555.72 and 91,097.88 is: 136,636.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,396.44 : 510,555.72 = 91,097.88 : x
  2. Step 2: Convert to fraction form
    340,396.44/510,555.72 = 91,097.88/x
  3. Step 3: Cross multiply
    340,396.44x = 510,555.72 × 91,097.88
  4. Step 4: Simplify right side
    340,396.44x = 46,510,543,713.87
  5. Step 5: Solve for x
    x = 46,510,543,713.87/340,396.44
  6. Step 6: Final answer
    x = 136,636.40

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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.