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Finding the Fourth Proportional to 220,277.80, 330,416.70 and 208,905.40

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Solution

The fourth proportional to 220,277.80, 330,416.70 and 208,905.40 is: 313,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,277.80 : 330,416.70 = 208,905.40 : x
  2. Step 2: Convert to fraction form
    220,277.80/330,416.70 = 208,905.40/x
  3. Step 3: Cross multiply
    220,277.80x = 330,416.70 × 208,905.40
  4. Step 4: Simplify right side
    220,277.80x = 69,025,832,880.18
  5. Step 5: Solve for x
    x = 69,025,832,880.18/220,277.80
  6. Step 6: Final answer
    x = 313,358.10

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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.