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Finding the Fourth Proportional to 341,520.40, 512,280.60 and 217,411.60

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Solution

The fourth proportional to 341,520.40, 512,280.60 and 217,411.60 is: 326,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,520.40 : 512,280.60 = 217,411.60 : x
  2. Step 2: Convert to fraction form
    341,520.40/512,280.60 = 217,411.60/x
  3. Step 3: Cross multiply
    341,520.40x = 512,280.60 × 217,411.60
  4. Step 4: Simplify right side
    341,520.40x = 111,375,744,894.96
  5. Step 5: Solve for x
    x = 111,375,744,894.96/341,520.40
  6. Step 6: Final answer
    x = 326,117.40

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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.