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Finding the Fourth Proportional to 382,491.20, 527,800.92 and 221,314.16

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Solution

The fourth proportional to 382,491.20, 527,800.92 and 221,314.16 is: 305,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,491.20 : 527,800.92 = 221,314.16 : x
  2. Step 2: Convert to fraction form
    382,491.20/527,800.92 = 221,314.16/x
  3. Step 3: Cross multiply
    382,491.20x = 527,800.92 × 221,314.16
  4. Step 4: Simplify right side
    382,491.20x = 116,809,817,257.03
  5. Step 5: Solve for x
    x = 116,809,817,257.03/382,491.20
  6. Step 6: Final answer
    x = 305,392.17

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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.