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Finding the Fourth Proportional to 280,000.60, 419,963.10 and 111,644.80

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Solution

The fourth proportional to 280,000.60, 419,963.10 and 111,644.80 is: 167,452.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,000.60 : 419,963.10 = 111,644.80 : x
  2. Step 2: Convert to fraction form
    280,000.60/419,963.10 = 111,644.80/x
  3. Step 3: Cross multiply
    280,000.60x = 419,963.10 × 111,644.80
  4. Step 4: Simplify right side
    280,000.60x = 46,886,696,306.88
  5. Step 5: Solve for x
    x = 46,886,696,306.88/280,000.60
  6. Step 6: Final answer
    x = 167,452.13

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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.