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Finding the Fourth Proportional to 262,375.20, 393,368.40 and 112,492.80

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Solution

The fourth proportional to 262,375.20, 393,368.40 and 112,492.80 is: 168,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,375.20 : 393,368.40 = 112,492.80 : x
  2. Step 2: Convert to fraction form
    262,375.20/393,368.40 = 112,492.80/x
  3. Step 3: Cross multiply
    262,375.20x = 393,368.40 × 112,492.80
  4. Step 4: Simplify right side
    262,375.20x = 44,251,112,747.52
  5. Step 5: Solve for x
    x = 44,251,112,747.52/262,375.20
  6. Step 6: Final answer
    x = 168,655.85

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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.