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Finding the Fourth Proportional to 221,305.40, 332,055.30 and 102,915.80

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Solution

The fourth proportional to 221,305.40, 332,055.30 and 102,915.80 is: 154,418.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,305.40 : 332,055.30 = 102,915.80 : x
  2. Step 2: Convert to fraction form
    221,305.40/332,055.30 = 102,915.80/x
  3. Step 3: Cross multiply
    221,305.40x = 332,055.30 × 102,915.80
  4. Step 4: Simplify right side
    221,305.40x = 34,173,736,843.74
  5. Step 5: Solve for x
    x = 34,173,736,843.74/221,305.40
  6. Step 6: Final answer
    x = 154,418.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.