Home / 285,788.60-394,405.79-158,464.20

Finding the Fourth Proportional to 285,788.60, 394,405.79 and 158,464.20

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Solution

The fourth proportional to 285,788.60, 394,405.79 and 158,464.20 is: 218,690.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,788.60 : 394,405.79 = 158,464.20 : x
  2. Step 2: Convert to fraction form
    285,788.60/394,405.79 = 158,464.20/x
  3. Step 3: Cross multiply
    285,788.60x = 394,405.79 × 158,464.20
  4. Step 4: Simplify right side
    285,788.60x = 62,499,197,347.25
  5. Step 5: Solve for x
    x = 62,499,197,347.25/285,788.60
  6. Step 6: Final answer
    x = 218,690.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.