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Finding the Fourth Proportional to 342,125.20, 512,604.60 and 282,638.80

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Solution

The fourth proportional to 342,125.20, 512,604.60 and 282,638.80 is: 423,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,125.20 : 512,604.60 = 282,638.80 : x
  2. Step 2: Convert to fraction form
    342,125.20/512,604.60 = 282,638.80/x
  3. Step 3: Cross multiply
    342,125.20x = 512,604.60 × 282,638.80
  4. Step 4: Simplify right side
    342,125.20x = 144,881,949,018.48
  5. Step 5: Solve for x
    x = 144,881,949,018.48/342,125.20
  6. Step 6: Final answer
    x = 423,476.40

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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.