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Finding the Fourth Proportional to 486,256.87, 729,327.88 and 131,298.58

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Solution

The fourth proportional to 486,256.87, 729,327.88 and 131,298.58 is: 196,932.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,256.87 : 729,327.88 = 131,298.58 : x
  2. Step 2: Convert to fraction form
    486,256.87/729,327.88 = 131,298.58/x
  3. Step 3: Cross multiply
    486,256.87x = 729,327.88 × 131,298.58
  4. Step 4: Simplify right side
    486,256.87x = 95,759,714,998.41
  5. Step 5: Solve for x
    x = 95,759,714,998.41/486,256.87
  6. Step 6: Final answer
    x = 196,932.36

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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.