Home / 285,494.40-393,985.44-158,172

Finding the Fourth Proportional to 285,494.40, 393,985.44 and 158,172

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Solution

The fourth proportional to 285,494.40, 393,985.44 and 158,172 is: 218,279.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,494.40 : 393,985.44 = 158,172 : x
  2. Step 2: Convert to fraction form
    285,494.40/393,985.44 = 158,172/x
  3. Step 3: Cross multiply
    285,494.40x = 393,985.44 × 158,172
  4. Step 4: Simplify right side
    285,494.40x = 62,317,465,015.68
  5. Step 5: Solve for x
    x = 62,317,465,015.68/285,494.40
  6. Step 6: Final answer
    x = 218,279.12

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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.