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Finding the Fourth Proportional to 272,492.25, 408,804.03 and 85,503.75

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Solution

The fourth proportional to 272,492.25, 408,804.03 and 85,503.75 is: 128,276.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,492.25 : 408,804.03 = 85,503.75 : x
  2. Step 2: Convert to fraction form
    272,492.25/408,804.03 = 85,503.75/x
  3. Step 3: Cross multiply
    272,492.25x = 408,804.03 × 85,503.75
  4. Step 4: Simplify right side
    272,492.25x = 34,954,277,580.11
  5. Step 5: Solve for x
    x = 34,954,277,580.11/272,492.25
  6. Step 6: Final answer
    x = 128,276.23

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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.