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Finding the Fourth Proportional to 342,138.60, 512,235.90 and 323,519.40

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Solution

The fourth proportional to 342,138.60, 512,235.90 and 323,519.40 is: 484,360.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,138.60 : 512,235.90 = 323,519.40 : x
  2. Step 2: Convert to fraction form
    342,138.60/512,235.90 = 323,519.40/x
  3. Step 3: Cross multiply
    342,138.60x = 512,235.90 × 323,519.40
  4. Step 4: Simplify right side
    342,138.60x = 165,718,251,026.46
  5. Step 5: Solve for x
    x = 165,718,251,026.46/342,138.60
  6. Step 6: Final answer
    x = 484,360.00

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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.