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Finding the Fourth Proportional to 291,860.37, 437,959.35 and 123,369.78

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Solution

The fourth proportional to 291,860.37, 437,959.35 and 123,369.78 is: 185,126.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,860.37 : 437,959.35 = 123,369.78 : x
  2. Step 2: Convert to fraction form
    291,860.37/437,959.35 = 123,369.78/x
  3. Step 3: Cross multiply
    291,860.37x = 437,959.35 × 123,369.78
  4. Step 4: Simplify right side
    291,860.37x = 54,030,948,658.44
  5. Step 5: Solve for x
    x = 54,030,948,658.44/291,860.37
  6. Step 6: Final answer
    x = 185,126.02

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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.