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Finding the Fourth Proportional to 330,057.60, 495,280.80 and 218,061.60

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Solution

The fourth proportional to 330,057.60, 495,280.80 and 218,061.60 is: 327,220.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,057.60 : 495,280.80 = 218,061.60 : x
  2. Step 2: Convert to fraction form
    330,057.60/495,280.80 = 218,061.60/x
  3. Step 3: Cross multiply
    330,057.60x = 495,280.80 × 218,061.60
  4. Step 4: Simplify right side
    330,057.60x = 108,001,723,697.28
  5. Step 5: Solve for x
    x = 108,001,723,697.28/330,057.60
  6. Step 6: Final answer
    x = 327,220.84

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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.