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Finding the Fourth Proportional to 260,967.04, 391,404.48 and 103,143.04

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Solution

The fourth proportional to 260,967.04, 391,404.48 and 103,143.04 is: 154,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,967.04 : 391,404.48 = 103,143.04 : x
  2. Step 2: Convert to fraction form
    260,967.04/391,404.48 = 103,143.04/x
  3. Step 3: Cross multiply
    260,967.04x = 391,404.48 × 103,143.04
  4. Step 4: Simplify right side
    260,967.04x = 40,370,647,936.82
  5. Step 5: Solve for x
    x = 40,370,647,936.82/260,967.04
  6. Step 6: Final answer
    x = 154,696.35

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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.