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Finding the Fourth Proportional to 342,023.40, 512,451.90 and 291,868.20

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Solution

The fourth proportional to 342,023.40, 512,451.90 and 291,868.20 is: 437,304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,023.40 : 512,451.90 = 291,868.20 : x
  2. Step 2: Convert to fraction form
    342,023.40/512,451.90 = 291,868.20/x
  3. Step 3: Cross multiply
    342,023.40x = 512,451.90 × 291,868.20
  4. Step 4: Simplify right side
    342,023.40x = 149,568,413,639.58
  5. Step 5: Solve for x
    x = 149,568,413,639.58/342,023.40
  6. Step 6: Final answer
    x = 437,304.62

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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.