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Finding the Fourth Proportional to 251,270.91, 376,739.73 and 91,327.85

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Solution

The fourth proportional to 251,270.91, 376,739.73 and 91,327.85 is: 136,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,270.91 : 376,739.73 = 91,327.85 : x
  2. Step 2: Convert to fraction form
    251,270.91/376,739.73 = 91,327.85/x
  3. Step 3: Cross multiply
    251,270.91x = 376,739.73 × 91,327.85
  4. Step 4: Simplify right side
    251,270.91x = 34,406,827,666.78
  5. Step 5: Solve for x
    x = 34,406,827,666.78/251,270.91
  6. Step 6: Final answer
    x = 136,931.20

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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.