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Finding the Fourth Proportional to 215,880.80, 323,821.20 and 163,392.80

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Solution

The fourth proportional to 215,880.80, 323,821.20 and 163,392.80 is: 245,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,880.80 : 323,821.20 = 163,392.80 : x
  2. Step 2: Convert to fraction form
    215,880.80/323,821.20 = 163,392.80/x
  3. Step 3: Cross multiply
    215,880.80x = 323,821.20 × 163,392.80
  4. Step 4: Simplify right side
    215,880.80x = 52,910,052,567.36
  5. Step 5: Solve for x
    x = 52,910,052,567.36/215,880.80
  6. Step 6: Final answer
    x = 245,089.20

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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.