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Finding the Fourth Proportional to 239,411.88, 330,389.28 and 130,515.60

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Solution

The fourth proportional to 239,411.88, 330,389.28 and 130,515.60 is: 180,112.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,411.88 : 330,389.28 = 130,515.60 : x
  2. Step 2: Convert to fraction form
    239,411.88/330,389.28 = 130,515.60/x
  3. Step 3: Cross multiply
    239,411.88x = 330,389.28 × 130,515.60
  4. Step 4: Simplify right side
    239,411.88x = 43,120,955,112.77
  5. Step 5: Solve for x
    x = 43,120,955,112.77/239,411.88
  6. Step 6: Final answer
    x = 180,112.01

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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.