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Finding the Fourth Proportional to 238,335.66, 328,765.86 and 142,787.01

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Solution

The fourth proportional to 238,335.66, 328,765.86 and 142,787.01 is: 196,963.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,335.66 : 328,765.86 = 142,787.01 : x
  2. Step 2: Convert to fraction form
    238,335.66/328,765.86 = 142,787.01/x
  3. Step 3: Cross multiply
    238,335.66x = 328,765.86 × 142,787.01
  4. Step 4: Simplify right side
    238,335.66x = 46,943,494,139.48
  5. Step 5: Solve for x
    x = 46,943,494,139.48/238,335.66
  6. Step 6: Final answer
    x = 196,963.79

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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.