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Finding the Fourth Proportional to 386,573.76, 579,770.88 and 106,113.60

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Solution

The fourth proportional to 386,573.76, 579,770.88 and 106,113.60 is: 159,145.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,573.76 : 579,770.88 = 106,113.60 : x
  2. Step 2: Convert to fraction form
    386,573.76/579,770.88 = 106,113.60/x
  3. Step 3: Cross multiply
    386,573.76x = 579,770.88 × 106,113.60
  4. Step 4: Simplify right side
    386,573.76x = 61,521,575,251.97
  5. Step 5: Solve for x
    x = 61,521,575,251.97/386,573.76
  6. Step 6: Final answer
    x = 159,145.76

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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.