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Finding the Fourth Proportional to 493,660.60, 740,515.20 and 257,464.60

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Solution

The fourth proportional to 493,660.60, 740,515.20 and 257,464.60 is: 386,209.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,660.60 : 740,515.20 = 257,464.60 : x
  2. Step 2: Convert to fraction form
    493,660.60/740,515.20 = 257,464.60/x
  3. Step 3: Cross multiply
    493,660.60x = 740,515.20 × 257,464.60
  4. Step 4: Simplify right side
    493,660.60x = 190,656,449,761.92
  5. Step 5: Solve for x
    x = 190,656,449,761.92/493,660.60
  6. Step 6: Final answer
    x = 386,209.57

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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.