Home / 238,726.31-358,013.51-78,772.43

Finding the Fourth Proportional to 238,726.31, 358,013.51 and 78,772.43

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Solution

The fourth proportional to 238,726.31, 358,013.51 and 78,772.43 is: 118,133.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,726.31 : 358,013.51 = 78,772.43 : x
  2. Step 2: Convert to fraction form
    238,726.31/358,013.51 = 78,772.43/x
  3. Step 3: Cross multiply
    238,726.31x = 358,013.51 × 78,772.43
  4. Step 4: Simplify right side
    238,726.31x = 28,201,591,971.60
  5. Step 5: Solve for x
    x = 28,201,591,971.60/238,726.31
  6. Step 6: Final answer
    x = 118,133.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.