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Finding the Fourth Proportional to 220,802.16, 330,956.88 and 87,646.80

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Solution

The fourth proportional to 220,802.16, 330,956.88 and 87,646.80 is: 131,372.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,802.16 : 330,956.88 = 87,646.80 : x
  2. Step 2: Convert to fraction form
    220,802.16/330,956.88 = 87,646.80/x
  3. Step 3: Cross multiply
    220,802.16x = 330,956.88 × 87,646.80
  4. Step 4: Simplify right side
    220,802.16x = 29,007,311,469.98
  5. Step 5: Solve for x
    x = 29,007,311,469.98/220,802.16
  6. Step 6: Final answer
    x = 131,372.41

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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.