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Finding the Fourth Proportional to 291,997.88, 438,074.70 and 92,322.02

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Solution

The fourth proportional to 291,997.88, 438,074.70 and 92,322.02 is: 138,507.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,997.88 : 438,074.70 = 92,322.02 : x
  2. Step 2: Convert to fraction form
    291,997.88/438,074.70 = 92,322.02/x
  3. Step 3: Cross multiply
    291,997.88x = 438,074.70 × 92,322.02
  4. Step 4: Simplify right side
    291,997.88x = 40,443,941,214.89
  5. Step 5: Solve for x
    x = 40,443,941,214.89/291,997.88
  6. Step 6: Final answer
    x = 138,507.65

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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.