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Finding the Fourth Proportional to 491,719.20, 737,578.80 and 159,295.20

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Solution

The fourth proportional to 491,719.20, 737,578.80 and 159,295.20 is: 238,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,719.20 : 737,578.80 = 159,295.20 : x
  2. Step 2: Convert to fraction form
    491,719.20/737,578.80 = 159,295.20/x
  3. Step 3: Cross multiply
    491,719.20x = 737,578.80 × 159,295.20
  4. Step 4: Simplify right side
    491,719.20x = 117,492,762,461.76
  5. Step 5: Solve for x
    x = 117,492,762,461.76/491,719.20
  6. Step 6: Final answer
    x = 238,942.80

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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.