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Finding the Fourth Proportional to 239,846.34, 330,979.28 and 130,948.68

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Solution

The fourth proportional to 239,846.34, 330,979.28 and 130,948.68 is: 180,704.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,846.34 : 330,979.28 = 130,948.68 : x
  2. Step 2: Convert to fraction form
    239,846.34/330,979.28 = 130,948.68/x
  3. Step 3: Cross multiply
    239,846.34x = 330,979.28 × 130,948.68
  4. Step 4: Simplify right side
    239,846.34x = 43,341,300,409.78
  5. Step 5: Solve for x
    x = 43,341,300,409.78/239,846.34
  6. Step 6: Final answer
    x = 180,704.44

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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.