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Finding the Fourth Proportional to 215,479.20, 323,737.20 and 192,669.60

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Solution

The fourth proportional to 215,479.20, 323,737.20 and 192,669.60 is: 289,467.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,479.20 : 323,737.20 = 192,669.60 : x
  2. Step 2: Convert to fraction form
    215,479.20/323,737.20 = 192,669.60/x
  3. Step 3: Cross multiply
    215,479.20x = 323,737.20 × 192,669.60
  4. Step 4: Simplify right side
    215,479.20x = 62,374,316,829.12
  5. Step 5: Solve for x
    x = 62,374,316,829.12/215,479.20
  6. Step 6: Final answer
    x = 289,467.92

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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.