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Finding the Fourth Proportional to 330,575.20, 495,862.80 and 328,117.60

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Solution

The fourth proportional to 330,575.20, 495,862.80 and 328,117.60 is: 492,176.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,575.20 : 495,862.80 = 328,117.60 : x
  2. Step 2: Convert to fraction form
    330,575.20/495,862.80 = 328,117.60/x
  3. Step 3: Cross multiply
    330,575.20x = 495,862.80 × 328,117.60
  4. Step 4: Simplify right side
    330,575.20x = 162,701,311,865.28
  5. Step 5: Solve for x
    x = 162,701,311,865.28/330,575.20
  6. Step 6: Final answer
    x = 492,176.40

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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.