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Finding the Fourth Proportional to 330,334.80, 455,934.60 and 217,168.08

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Solution

The fourth proportional to 330,334.80, 455,934.60 and 217,168.08 is: 299,739.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,334.80 : 455,934.60 = 217,168.08 : x
  2. Step 2: Convert to fraction form
    330,334.80/455,934.60 = 217,168.08/x
  3. Step 3: Cross multiply
    330,334.80x = 455,934.60 × 217,168.08
  4. Step 4: Simplify right side
    330,334.80x = 99,014,441,687.57
  5. Step 5: Solve for x
    x = 99,014,441,687.57/330,334.80
  6. Step 6: Final answer
    x = 299,739.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.