Home / 271,942.40-407,913.60-172,215.20

Finding the Fourth Proportional to 271,942.40, 407,913.60 and 172,215.20

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Solution

The fourth proportional to 271,942.40, 407,913.60 and 172,215.20 is: 258,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,942.40 : 407,913.60 = 172,215.20 : x
  2. Step 2: Convert to fraction form
    271,942.40/407,913.60 = 172,215.20/x
  3. Step 3: Cross multiply
    271,942.40x = 407,913.60 × 172,215.20
  4. Step 4: Simplify right side
    271,942.40x = 70,248,922,206.72
  5. Step 5: Solve for x
    x = 70,248,922,206.72/271,942.40
  6. Step 6: Final answer
    x = 258,322.80

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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.