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Finding the Fourth Proportional to 272,193.55, 408,373.32 and 139,167.22

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Solution

The fourth proportional to 272,193.55, 408,373.32 and 139,167.22 is: 208,793.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,193.55 : 408,373.32 = 139,167.22 : x
  2. Step 2: Convert to fraction form
    272,193.55/408,373.32 = 139,167.22/x
  3. Step 3: Cross multiply
    272,193.55x = 408,373.32 × 139,167.22
  4. Step 4: Simplify right side
    272,193.55x = 56,832,179,666.57
  5. Step 5: Solve for x
    x = 56,832,179,666.57/272,193.55
  6. Step 6: Final answer
    x = 208,793.26

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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.