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Finding the Fourth Proportional to 220,711.80, 330,192.90 and 191,454.60

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Solution

The fourth proportional to 220,711.80, 330,192.90 and 191,454.60 is: 286,423.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,711.80 : 330,192.90 = 191,454.60 : x
  2. Step 2: Convert to fraction form
    220,711.80/330,192.90 = 191,454.60/x
  3. Step 3: Cross multiply
    220,711.80x = 330,192.90 × 191,454.60
  4. Step 4: Simplify right side
    220,711.80x = 63,216,949,592.34
  5. Step 5: Solve for x
    x = 63,216,949,592.34/220,711.80
  6. Step 6: Final answer
    x = 286,423.06

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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.