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Finding the Fourth Proportional to 291,392.21, 437,147.44 and 91,666.15

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Solution

The fourth proportional to 291,392.21, 437,147.44 and 91,666.15 is: 137,517.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,392.21 : 437,147.44 = 91,666.15 : x
  2. Step 2: Convert to fraction form
    291,392.21/437,147.44 = 91,666.15/x
  3. Step 3: Cross multiply
    291,392.21x = 437,147.44 × 91,666.15
  4. Step 4: Simplify right side
    291,392.21x = 40,071,620,943.50
  5. Step 5: Solve for x
    x = 40,071,620,943.50/291,392.21
  6. Step 6: Final answer
    x = 137,517.82

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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.