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Finding the Fourth Proportional to 228,734.32, 315,653.44 and 139,310.32

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Solution

The fourth proportional to 228,734.32, 315,653.44 and 139,310.32 is: 192,248.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,734.32 : 315,653.44 = 139,310.32 : x
  2. Step 2: Convert to fraction form
    228,734.32/315,653.44 = 139,310.32/x
  3. Step 3: Cross multiply
    228,734.32x = 315,653.44 × 139,310.32
  4. Step 4: Simplify right side
    228,734.32x = 43,973,781,735.50
  5. Step 5: Solve for x
    x = 43,973,781,735.50/228,734.32
  6. Step 6: Final answer
    x = 192,248.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.