Home / 281,631.60-422,309.16-139,312.44

Finding the Fourth Proportional to 281,631.60, 422,309.16 and 139,312.44

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Solution

The fourth proportional to 281,631.60, 422,309.16 and 139,312.44 is: 208,900.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,631.60 : 422,309.16 = 139,312.44 : x
  2. Step 2: Convert to fraction form
    281,631.60/422,309.16 = 139,312.44/x
  3. Step 3: Cross multiply
    281,631.60x = 422,309.16 × 139,312.44
  4. Step 4: Simplify right side
    281,631.60x = 58,832,919,513.95
  5. Step 5: Solve for x
    x = 58,832,919,513.95/281,631.60
  6. Step 6: Final answer
    x = 208,900.28

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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.