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Finding the Fourth Proportional to 330,172.40, 495,258.60 and 80,854.40

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Solution

The fourth proportional to 330,172.40, 495,258.60 and 80,854.40 is: 121,281.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,172.40 : 495,258.60 = 80,854.40 : x
  2. Step 2: Convert to fraction form
    330,172.40/495,258.60 = 80,854.40/x
  3. Step 3: Cross multiply
    330,172.40x = 495,258.60 × 80,854.40
  4. Step 4: Simplify right side
    330,172.40x = 40,043,836,947.84
  5. Step 5: Solve for x
    x = 40,043,836,947.84/330,172.40
  6. Step 6: Final answer
    x = 121,281.60

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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.