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Finding the Fourth Proportional to 262,286.60, 393,429.90 and 84,920.90

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Solution

The fourth proportional to 262,286.60, 393,429.90 and 84,920.90 is: 127,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,286.60 : 393,429.90 = 84,920.90 : x
  2. Step 2: Convert to fraction form
    262,286.60/393,429.90 = 84,920.90/x
  3. Step 3: Cross multiply
    262,286.60x = 393,429.90 × 84,920.90
  4. Step 4: Simplify right side
    262,286.60x = 33,410,421,194.91
  5. Step 5: Solve for x
    x = 33,410,421,194.91/262,286.60
  6. Step 6: Final answer
    x = 127,381.35

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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.