Home / 271,640.40-407,132.55-138,452.10

Finding the Fourth Proportional to 271,640.40, 407,132.55 and 138,452.10

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Solution

The fourth proportional to 271,640.40, 407,132.55 and 138,452.10 is: 207,510.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,640.40 : 407,132.55 = 138,452.10 : x
  2. Step 2: Convert to fraction form
    271,640.40/407,132.55 = 138,452.10/x
  3. Step 3: Cross multiply
    271,640.40x = 407,132.55 × 138,452.10
  4. Step 4: Simplify right side
    271,640.40x = 56,368,356,525.86
  5. Step 5: Solve for x
    x = 56,368,356,525.86/271,640.40
  6. Step 6: Final answer
    x = 207,510.95

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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.