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Finding the Fourth Proportional to 315,245.60, 472,753.20 and 104,890.40

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Solution

The fourth proportional to 315,245.60, 472,753.20 and 104,890.40 is: 157,297.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,245.60 : 472,753.20 = 104,890.40 : x
  2. Step 2: Convert to fraction form
    315,245.60/472,753.20 = 104,890.40/x
  3. Step 3: Cross multiply
    315,245.60x = 472,753.20 × 104,890.40
  4. Step 4: Simplify right side
    315,245.60x = 49,587,272,249.28
  5. Step 5: Solve for x
    x = 49,587,272,249.28/315,245.60
  6. Step 6: Final answer
    x = 157,297.27

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1.5x scale

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.