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Finding the Fourth Proportional to 267,628.90, 401,444.04 and 90,260.50

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Solution

The fourth proportional to 267,628.90, 401,444.04 and 90,260.50 is: 135,390.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,628.90 : 401,444.04 = 90,260.50 : x
  2. Step 2: Convert to fraction form
    267,628.90/401,444.04 = 90,260.50/x
  3. Step 3: Cross multiply
    267,628.90x = 401,444.04 × 90,260.50
  4. Step 4: Simplify right side
    267,628.90x = 36,234,539,772.42
  5. Step 5: Solve for x
    x = 36,234,539,772.42/267,628.90
  6. Step 6: Final answer
    x = 135,390.98

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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.