Home / 330,783.11-456,641.10-221,847.61

Finding the Fourth Proportional to 330,783.11, 456,641.10 and 221,847.61

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Solution

The fourth proportional to 330,783.11, 456,641.10 and 221,847.61 is: 306,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,783.11 : 456,641.10 = 221,847.61 : x
  2. Step 2: Convert to fraction form
    330,783.11/456,641.10 = 221,847.61/x
  3. Step 3: Cross multiply
    330,783.11x = 456,641.10 × 221,847.61
  4. Step 4: Simplify right side
    330,783.11x = 101,304,735,521.17
  5. Step 5: Solve for x
    x = 101,304,735,521.17/330,783.11
  6. Step 6: Final answer
    x = 306,257.28

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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.