Home / 384,447.13-530,553.15-221,103.75

Finding the Fourth Proportional to 384,447.13, 530,553.15 and 221,103.75

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Solution

The fourth proportional to 384,447.13, 530,553.15 and 221,103.75 is: 305,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,447.13 : 530,553.15 = 221,103.75 : x
  2. Step 2: Convert to fraction form
    384,447.13/530,553.15 = 221,103.75/x
  3. Step 3: Cross multiply
    384,447.13x = 530,553.15 × 221,103.75
  4. Step 4: Simplify right side
    384,447.13x = 117,307,291,039.31
  5. Step 5: Solve for x
    x = 117,307,291,039.31/384,447.13
  6. Step 6: Final answer
    x = 305,132.44

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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.