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Finding the Fourth Proportional to 323,872,874.40, 485,809,311.60 and 292,632,016.80

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Solution

The fourth proportional to 323,872,874.40, 485,809,311.60 and 292,632,016.80 is: 438,948,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,872,874.40 : 485,809,311.60 = 292,632,016.80 : x
  2. Step 2: Convert to fraction form
    323,872,874.40/485,809,311.60 = 292,632,016.80/x
  3. Step 3: Cross multiply
    323,872,874.40x = 485,809,311.60 × 292,632,016.80
  4. Step 4: Simplify right side
    323,872,874.40x = 142,163,358,633,727,648
  5. Step 5: Solve for x
    x = 142,163,358,633,727,648/323,872,874.40
  6. Step 6: Final answer
    x = 438,948,025.20

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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.