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Finding the Fourth Proportional to 239,780.54, 330,895.55 and 130,884.46

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Solution

The fourth proportional to 239,780.54, 330,895.55 and 130,884.46 is: 180,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,780.54 : 330,895.55 = 130,884.46 : x
  2. Step 2: Convert to fraction form
    239,780.54/330,895.55 = 130,884.46/x
  3. Step 3: Cross multiply
    239,780.54x = 330,895.55 × 130,884.46
  4. Step 4: Simplify right side
    239,780.54x = 43,309,084,878.13
  5. Step 5: Solve for x
    x = 43,309,084,878.13/239,780.54
  6. Step 6: Final answer
    x = 180,619.68

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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.