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Finding the Fourth Proportional to 215,549.20, 323,323.80 and 161,894.80

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Solution

The fourth proportional to 215,549.20, 323,323.80 and 161,894.80 is: 242,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,549.20 : 323,323.80 = 161,894.80 : x
  2. Step 2: Convert to fraction form
    215,549.20/323,323.80 = 161,894.80/x
  3. Step 3: Cross multiply
    215,549.20x = 323,323.80 × 161,894.80
  4. Step 4: Simplify right side
    215,549.20x = 52,344,441,936.24
  5. Step 5: Solve for x
    x = 52,344,441,936.24/215,549.20
  6. Step 6: Final answer
    x = 242,842.20

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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.