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Finding the Fourth Proportional to 280,522.79, 420,662.44 and 154,125.12

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Solution

The fourth proportional to 280,522.79, 420,662.44 and 154,125.12 is: 231,120.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,522.79 : 420,662.44 = 154,125.12 : x
  2. Step 2: Convert to fraction form
    280,522.79/420,662.44 = 154,125.12/x
  3. Step 3: Cross multiply
    280,522.79x = 420,662.44 × 154,125.12
  4. Step 4: Simplify right side
    280,522.79x = 64,834,649,198.04
  5. Step 5: Solve for x
    x = 64,834,649,198.04/280,522.79
  6. Step 6: Final answer
    x = 231,120.79

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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.