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Finding the Fourth Proportional to 386,168.67, 579,291.92 and 101,878.88

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Solution

The fourth proportional to 386,168.67, 579,291.92 and 101,878.88 is: 152,828.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,168.67 : 579,291.92 = 101,878.88 : x
  2. Step 2: Convert to fraction form
    386,168.67/579,291.92 = 101,878.88/x
  3. Step 3: Cross multiply
    386,168.67x = 579,291.92 × 101,878.88
  4. Step 4: Simplify right side
    386,168.67x = 59,017,608,596.80
  5. Step 5: Solve for x
    x = 59,017,608,596.80/386,168.67
  6. Step 6: Final answer
    x = 152,828.58

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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.