Home / 317,639.88-438,548.18-196,910.19

Finding the Fourth Proportional to 317,639.88, 438,548.18 and 196,910.19

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Solution

The fourth proportional to 317,639.88, 438,548.18 and 196,910.19 is: 271,863.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,639.88 : 438,548.18 = 196,910.19 : x
  2. Step 2: Convert to fraction form
    317,639.88/438,548.18 = 196,910.19/x
  3. Step 3: Cross multiply
    317,639.88x = 438,548.18 × 196,910.19
  4. Step 4: Simplify right side
    317,639.88x = 86,354,604,463.40
  5. Step 5: Solve for x
    x = 86,354,604,463.40/317,639.88
  6. Step 6: Final answer
    x = 271,863.23

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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.