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Finding the Fourth Proportional to 239,385.79, 330,353.27 and 130,489.57

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Solution

The fourth proportional to 239,385.79, 330,353.27 and 130,489.57 is: 180,076.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,385.79 : 330,353.27 = 130,489.57 : x
  2. Step 2: Convert to fraction form
    239,385.79/330,353.27 = 130,489.57/x
  3. Step 3: Cross multiply
    239,385.79x = 330,353.27 × 130,489.57
  4. Step 4: Simplify right side
    239,385.79x = 43,107,656,150.39
  5. Step 5: Solve for x
    x = 43,107,656,150.39/239,385.79
  6. Step 6: Final answer
    x = 180,076.09

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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.