Home / 311,896.25-430,419.39-172,199.34

Finding the Fourth Proportional to 311,896.25, 430,419.39 and 172,199.34

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Solution

The fourth proportional to 311,896.25, 430,419.39 and 172,199.34 is: 237,636.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,896.25 : 430,419.39 = 172,199.34 : x
  2. Step 2: Convert to fraction form
    311,896.25/430,419.39 = 172,199.34/x
  3. Step 3: Cross multiply
    311,896.25x = 430,419.39 × 172,199.34
  4. Step 4: Simplify right side
    311,896.25x = 74,117,934,881.20
  5. Step 5: Solve for x
    x = 74,117,934,881.20/311,896.25
  6. Step 6: Final answer
    x = 237,636.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.