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Finding the Fourth Proportional to 251,344.66, 376,898.55 and 91,307.75

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Solution

The fourth proportional to 251,344.66, 376,898.55 and 91,307.75 is: 136,918.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,344.66 : 376,898.55 = 91,307.75 : x
  2. Step 2: Convert to fraction form
    251,344.66/376,898.55 = 91,307.75/x
  3. Step 3: Cross multiply
    251,344.66x = 376,898.55 × 91,307.75
  4. Step 4: Simplify right side
    251,344.66x = 34,413,756,694.27
  5. Step 5: Solve for x
    x = 34,413,756,694.27/251,344.66
  6. Step 6: Final answer
    x = 136,918.59

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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.