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Finding the Fourth Proportional to 260,920.96, 391,279.32 and 92,376.16

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Solution

The fourth proportional to 260,920.96, 391,279.32 and 92,376.16 is: 138,528.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,920.96 : 391,279.32 = 92,376.16 : x
  2. Step 2: Convert to fraction form
    260,920.96/391,279.32 = 92,376.16/x
  3. Step 3: Cross multiply
    260,920.96x = 391,279.32 × 92,376.16
  4. Step 4: Simplify right side
    260,920.96x = 36,144,881,069.01
  5. Step 5: Solve for x
    x = 36,144,881,069.01/260,920.96
  6. Step 6: Final answer
    x = 138,528.09

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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.