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Finding the Fourth Proportional to 607,990.60, 911,985.90 and 164,758.60

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Solution

The fourth proportional to 607,990.60, 911,985.90 and 164,758.60 is: 247,137.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,990.60 : 911,985.90 = 164,758.60 : x
  2. Step 2: Convert to fraction form
    607,990.60/911,985.90 = 164,758.60/x
  3. Step 3: Cross multiply
    607,990.60x = 911,985.90 × 164,758.60
  4. Step 4: Simplify right side
    607,990.60x = 150,257,520,103.74
  5. Step 5: Solve for x
    x = 150,257,520,103.74/607,990.60
  6. Step 6: Final answer
    x = 247,137.90

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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.