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Finding the Fourth Proportional to 239,715.78, 330,797.39 and 130,817.35

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Solution

The fourth proportional to 239,715.78, 330,797.39 and 130,817.35 is: 180,522.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,715.78 : 330,797.39 = 130,817.35 : x
  2. Step 2: Convert to fraction form
    239,715.78/330,797.39 = 130,817.35/x
  3. Step 3: Cross multiply
    239,715.78x = 330,797.39 × 130,817.35
  4. Step 4: Simplify right side
    239,715.78x = 43,274,037,946.72
  5. Step 5: Solve for x
    x = 43,274,037,946.72/239,715.78
  6. Step 6: Final answer
    x = 180,522.27

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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.