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Finding the Fourth Proportional to 267,625.90, 401,439.54 and 90,257.50

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Solution

The fourth proportional to 267,625.90, 401,439.54 and 90,257.50 is: 135,386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,625.90 : 401,439.54 = 90,257.50 : x
  2. Step 2: Convert to fraction form
    267,625.90/401,439.54 = 90,257.50/x
  3. Step 3: Cross multiply
    267,625.90x = 401,439.54 × 90,257.50
  4. Step 4: Simplify right side
    267,625.90x = 36,232,927,274.35
  5. Step 5: Solve for x
    x = 36,232,927,274.35/267,625.90
  6. Step 6: Final answer
    x = 135,386.48

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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.