Home / 221,184.91-305,139.09-140,569.21

Finding the Fourth Proportional to 221,184.91, 305,139.09 and 140,569.21

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Solution

The fourth proportional to 221,184.91, 305,139.09 and 140,569.21 is: 193,924.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,184.91 : 305,139.09 = 140,569.21 : x
  2. Step 2: Convert to fraction form
    221,184.91/305,139.09 = 140,569.21/x
  3. Step 3: Cross multiply
    221,184.91x = 305,139.09 × 140,569.21
  4. Step 4: Simplify right side
    221,184.91x = 42,893,160,821.42
  5. Step 5: Solve for x
    x = 42,893,160,821.42/221,184.91
  6. Step 6: Final answer
    x = 193,924.44

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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.