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Finding the Fourth Proportional to 234,874.32, 324,105.16 and 139,364.56

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Solution

The fourth proportional to 234,874.32, 324,105.16 and 139,364.56 is: 192,310.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,874.32 : 324,105.16 = 139,364.56 : x
  2. Step 2: Convert to fraction form
    234,874.32/324,105.16 = 139,364.56/x
  3. Step 3: Cross multiply
    234,874.32x = 324,105.16 × 139,364.56
  4. Step 4: Simplify right side
    234,874.32x = 45,168,773,017.13
  5. Step 5: Solve for x
    x = 45,168,773,017.13/234,874.32
  6. Step 6: Final answer
    x = 192,310.39

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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.