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Finding the Fourth Proportional to 272,385.24, 408,960.72 and 139,360.92

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Solution

The fourth proportional to 272,385.24, 408,960.72 and 139,360.92 is: 209,237.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,385.24 : 408,960.72 = 139,360.92 : x
  2. Step 2: Convert to fraction form
    272,385.24/408,960.72 = 139,360.92/x
  3. Step 3: Cross multiply
    272,385.24x = 408,960.72 × 139,360.92
  4. Step 4: Simplify right side
    272,385.24x = 56,993,142,183.06
  5. Step 5: Solve for x
    x = 56,993,142,183.06/272,385.24
  6. Step 6: Final answer
    x = 209,237.26

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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.