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Finding the Fourth Proportional to 393,522.84, 543,049.92 and 221,450.76

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Solution

The fourth proportional to 393,522.84, 543,049.92 and 221,450.76 is: 305,595.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,522.84 : 543,049.92 = 221,450.76 : x
  2. Step 2: Convert to fraction form
    393,522.84/543,049.92 = 221,450.76/x
  3. Step 3: Cross multiply
    393,522.84x = 543,049.92 × 221,450.76
  4. Step 4: Simplify right side
    393,522.84x = 120,258,817,501.94
  5. Step 5: Solve for x
    x = 120,258,817,501.94/393,522.84
  6. Step 6: Final answer
    x = 305,595.52

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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.