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Finding the Fourth Proportional to 239,806.32, 330,881.40 and 139,150.32

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Solution

The fourth proportional to 239,806.32, 330,881.40 and 139,150.32 is: 191,997.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,806.32 : 330,881.40 = 139,150.32 : x
  2. Step 2: Convert to fraction form
    239,806.32/330,881.40 = 139,150.32/x
  3. Step 3: Cross multiply
    239,806.32x = 330,881.40 × 139,150.32
  4. Step 4: Simplify right side
    239,806.32x = 46,042,252,692.05
  5. Step 5: Solve for x
    x = 46,042,252,692.05/239,806.32
  6. Step 6: Final answer
    x = 191,997.66

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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.