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Finding the Fourth Proportional to 330,037.60, 495,056.40 and 80,719.60

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Solution

The fourth proportional to 330,037.60, 495,056.40 and 80,719.60 is: 121,079.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,037.60 : 495,056.40 = 80,719.60 : x
  2. Step 2: Convert to fraction form
    330,037.60/495,056.40 = 80,719.60/x
  3. Step 3: Cross multiply
    330,037.60x = 495,056.40 × 80,719.60
  4. Step 4: Simplify right side
    330,037.60x = 39,960,754,585.44
  5. Step 5: Solve for x
    x = 39,960,754,585.44/330,037.60
  6. Step 6: Final answer
    x = 121,079.40

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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.