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Finding the Fourth Proportional to 324,111.60, 486,604.80 and 257,626.80

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Solution

The fourth proportional to 324,111.60, 486,604.80 and 257,626.80 is: 386,787.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,111.60 : 486,604.80 = 257,626.80 : x
  2. Step 2: Convert to fraction form
    324,111.60/486,604.80 = 257,626.80/x
  3. Step 3: Cross multiply
    324,111.60x = 486,604.80 × 257,626.80
  4. Step 4: Simplify right side
    324,111.60x = 125,362,437,488.64
  5. Step 5: Solve for x
    x = 125,362,437,488.64/324,111.60
  6. Step 6: Final answer
    x = 386,787.88

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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.