Home / 272,216.20-408,407.18-139,189.90

Finding the Fourth Proportional to 272,216.20, 408,407.18 and 139,189.90

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Solution

The fourth proportional to 272,216.20, 408,407.18 and 139,189.90 is: 208,827.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,216.20 : 408,407.18 = 139,189.90 : x
  2. Step 2: Convert to fraction form
    272,216.20/408,407.18 = 139,189.90/x
  3. Step 3: Cross multiply
    272,216.20x = 408,407.18 × 139,189.90
  4. Step 4: Simplify right side
    272,216.20x = 56,846,154,543.48
  5. Step 5: Solve for x
    x = 56,846,154,543.48/272,216.20
  6. Step 6: Final answer
    x = 208,827.23

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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.