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Finding the Fourth Proportional to 215,611.30, 323,416.95 and 163,123.30

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Solution

The fourth proportional to 215,611.30, 323,416.95 and 163,123.30 is: 244,684.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,611.30 : 323,416.95 = 163,123.30 : x
  2. Step 2: Convert to fraction form
    215,611.30/323,416.95 = 163,123.30/x
  3. Step 3: Cross multiply
    215,611.30x = 323,416.95 × 163,123.30
  4. Step 4: Simplify right side
    215,611.30x = 52,756,840,159.94
  5. Step 5: Solve for x
    x = 52,756,840,159.94/215,611.30
  6. Step 6: Final answer
    x = 244,684.95

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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.