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Finding the Fourth Proportional to 291,998.21, 437,994.66 and 92,318.66

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Solution

The fourth proportional to 291,998.21, 437,994.66 and 92,318.66 is: 138,477.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,998.21 : 437,994.66 = 92,318.66 : x
  2. Step 2: Convert to fraction form
    291,998.21/437,994.66 = 92,318.66/x
  3. Step 3: Cross multiply
    291,998.21x = 437,994.66 × 92,318.66
  4. Step 4: Simplify right side
    291,998.21x = 40,435,077,908.38
  5. Step 5: Solve for x
    x = 40,435,077,908.38/291,998.21
  6. Step 6: Final answer
    x = 138,477.15

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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.