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Finding the Fourth Proportional to 280,843.62, 421,265.46 and 93,855.12

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Solution

The fourth proportional to 280,843.62, 421,265.46 and 93,855.12 is: 140,782.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,843.62 : 421,265.46 = 93,855.12 : x
  2. Step 2: Convert to fraction form
    280,843.62/421,265.46 = 93,855.12/x
  3. Step 3: Cross multiply
    280,843.62x = 421,265.46 × 93,855.12
  4. Step 4: Simplify right side
    280,843.62x = 39,537,920,300.16
  5. Step 5: Solve for x
    x = 39,537,920,300.16/280,843.62
  6. Step 6: Final answer
    x = 140,782.69

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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.