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Finding the Fourth Proportional to 272,630.49, 409,029.15 and 139,604.89

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Solution

The fourth proportional to 272,630.49, 409,029.15 and 139,604.89 is: 209,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,630.49 : 409,029.15 = 139,604.89 : x
  2. Step 2: Convert to fraction form
    272,630.49/409,029.15 = 139,604.89/x
  3. Step 3: Cross multiply
    272,630.49x = 409,029.15 × 139,604.89
  4. Step 4: Simplify right side
    272,630.49x = 57,102,469,492.54
  5. Step 5: Solve for x
    x = 57,102,469,492.54/272,630.49
  6. Step 6: Final answer
    x = 209,450.05

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1.5x scale

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.