Home / 284,016.51-391,929.11-154,947.30

Finding the Fourth Proportional to 284,016.51, 391,929.11 and 154,947.30

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Solution

The fourth proportional to 284,016.51, 391,929.11 and 154,947.30 is: 213,819.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,016.51 : 391,929.11 = 154,947.30 : x
  2. Step 2: Convert to fraction form
    284,016.51/391,929.11 = 154,947.30/x
  3. Step 3: Cross multiply
    284,016.51x = 391,929.11 × 154,947.30
  4. Step 4: Simplify right side
    284,016.51x = 60,728,356,611.17
  5. Step 5: Solve for x
    x = 60,728,356,611.17/284,016.51
  6. Step 6: Final answer
    x = 213,819.81

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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.