Home / 285,317.22-393,732.92-157,990.08

Finding the Fourth Proportional to 285,317.22, 393,732.92 and 157,990.08

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Solution

The fourth proportional to 285,317.22, 393,732.92 and 157,990.08 is: 218,023.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,317.22 : 393,732.92 = 157,990.08 : x
  2. Step 2: Convert to fraction form
    285,317.22/393,732.92 = 157,990.08/x
  3. Step 3: Cross multiply
    285,317.22x = 393,732.92 × 157,990.08
  4. Step 4: Simplify right side
    285,317.22x = 62,205,895,529.43
  5. Step 5: Solve for x
    x = 62,205,895,529.43/285,317.22
  6. Step 6: Final answer
    x = 218,023.63

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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.