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Finding the Fourth Proportional to 280,034.20, 419,468.10 and 280,034.20

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Solution

The fourth proportional to 280,034.20, 419,468.10 and 280,034.20 is: 419,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,034.20 : 419,468.10 = 280,034.20 : x
  2. Step 2: Convert to fraction form
    280,034.20/419,468.10 = 280,034.20/x
  3. Step 3: Cross multiply
    280,034.20x = 419,468.10 × 280,034.20
  4. Step 4: Simplify right side
    280,034.20x = 117,465,413,809.02
  5. Step 5: Solve for x
    x = 117,465,413,809.02/280,034.20
  6. Step 6: Final answer
    x = 419,468.10

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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.