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Finding the Fourth Proportional to 268,953.40, 403,284.30 and 91,388.44

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Solution

The fourth proportional to 268,953.40, 403,284.30 and 91,388.44 is: 137,033.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,953.40 : 403,284.30 = 91,388.44 : x
  2. Step 2: Convert to fraction form
    268,953.40/403,284.30 = 91,388.44/x
  3. Step 3: Cross multiply
    268,953.40x = 403,284.30 × 91,388.44
  4. Step 4: Simplify right side
    268,953.40x = 36,855,523,053.49
  5. Step 5: Solve for x
    x = 36,855,523,053.49/268,953.40
  6. Step 6: Final answer
    x = 137,033.12

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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.