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Finding the Fourth Proportional to 272,179.44, 408,521.88 and 139,154.76

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Solution

The fourth proportional to 272,179.44, 408,521.88 and 139,154.76 is: 208,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,179.44 : 408,521.88 = 139,154.76 : x
  2. Step 2: Convert to fraction form
    272,179.44/408,521.88 = 139,154.76/x
  3. Step 3: Cross multiply
    272,179.44x = 408,521.88 × 139,154.76
  4. Step 4: Simplify right side
    272,179.44x = 56,847,764,166.15
  5. Step 5: Solve for x
    x = 56,847,764,166.15/272,179.44
  6. Step 6: Final answer
    x = 208,861.35

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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.