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Finding the Fourth Proportional to 668,800.80, 1,003,201.20 and 247,989.60

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Solution

The fourth proportional to 668,800.80, 1,003,201.20 and 247,989.60 is: 371,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,800.80 : 1,003,201.20 = 247,989.60 : x
  2. Step 2: Convert to fraction form
    668,800.80/1,003,201.20 = 247,989.60/x
  3. Step 3: Cross multiply
    668,800.80x = 1,003,201.20 × 247,989.60
  4. Step 4: Simplify right side
    668,800.80x = 248,783,464,307.52
  5. Step 5: Solve for x
    x = 248,783,464,307.52/668,800.80
  6. Step 6: Final answer
    x = 371,984.40

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Similar ratio
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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.