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Finding the Fourth Proportional to 239,718.95, 330,820.09 and 130,829.24

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Solution

The fourth proportional to 239,718.95, 330,820.09 and 130,829.24 is: 180,548.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,718.95 : 330,820.09 = 130,829.24 : x
  2. Step 2: Convert to fraction form
    239,718.95/330,820.09 = 130,829.24/x
  3. Step 3: Cross multiply
    239,718.95x = 330,820.09 × 130,829.24
  4. Step 4: Simplify right side
    239,718.95x = 43,280,940,297.29
  5. Step 5: Solve for x
    x = 43,280,940,297.29/239,718.95
  6. Step 6: Final answer
    x = 180,548.69

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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.