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Finding the Fourth Proportional to 357,958.60, 536,935.74 and 91,719.16

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Solution

The fourth proportional to 357,958.60, 536,935.74 and 91,719.16 is: 137,578.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,958.60 : 536,935.74 = 91,719.16 : x
  2. Step 2: Convert to fraction form
    357,958.60/536,935.74 = 91,719.16/x
  3. Step 3: Cross multiply
    357,958.60x = 536,935.74 × 91,719.16
  4. Step 4: Simplify right side
    357,958.60x = 49,247,295,046.78
  5. Step 5: Solve for x
    x = 49,247,295,046.78/357,958.60
  6. Step 6: Final answer
    x = 137,578.19

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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.