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Finding the Fourth Proportional to 272,492.44, 408,804.30 and 85,503.94

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Solution

The fourth proportional to 272,492.44, 408,804.30 and 85,503.94 is: 128,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,492.44 : 408,804.30 = 85,503.94 : x
  2. Step 2: Convert to fraction form
    272,492.44/408,804.30 = 85,503.94/x
  3. Step 3: Cross multiply
    272,492.44x = 408,804.30 × 85,503.94
  4. Step 4: Simplify right side
    272,492.44x = 34,954,377,316.93
  5. Step 5: Solve for x
    x = 34,954,377,316.93/272,492.44
  6. Step 6: Final answer
    x = 128,276.50

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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.