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Finding the Fourth Proportional to 216,031.70, 324,436.35 and 156,934.10

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Solution

The fourth proportional to 216,031.70, 324,436.35 and 156,934.10 is: 235,683.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,031.70 : 324,436.35 = 156,934.10 : x
  2. Step 2: Convert to fraction form
    216,031.70/324,436.35 = 156,934.10/x
  3. Step 3: Cross multiply
    216,031.70x = 324,436.35 × 156,934.10
  4. Step 4: Simplify right side
    216,031.70x = 50,915,126,594.54
  5. Step 5: Solve for x
    x = 50,915,126,594.54/216,031.70
  6. Step 6: Final answer
    x = 235,683.59

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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.