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Finding the Fourth Proportional to 342,426.10, 513,639.15 and 329,523.70

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Solution

The fourth proportional to 342,426.10, 513,639.15 and 329,523.70 is: 494,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,426.10 : 513,639.15 = 329,523.70 : x
  2. Step 2: Convert to fraction form
    342,426.10/513,639.15 = 329,523.70/x
  3. Step 3: Cross multiply
    342,426.10x = 513,639.15 × 329,523.70
  4. Step 4: Simplify right side
    342,426.10x = 169,256,273,172.86
  5. Step 5: Solve for x
    x = 169,256,273,172.86/342,426.10
  6. Step 6: Final answer
    x = 494,285.55

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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.