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Finding the Fourth Proportional to 216,394.70, 324,008.85 and 156,908.30

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Solution

The fourth proportional to 216,394.70, 324,008.85 and 156,908.30 is: 234,939.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,394.70 : 324,008.85 = 156,908.30 : x
  2. Step 2: Convert to fraction form
    216,394.70/324,008.85 = 156,908.30/x
  3. Step 3: Cross multiply
    216,394.70x = 324,008.85 × 156,908.30
  4. Step 4: Simplify right side
    216,394.70x = 50,839,677,838.46
  5. Step 5: Solve for x
    x = 50,839,677,838.46/216,394.70
  6. Step 6: Final answer
    x = 234,939.57

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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.