Home / 286,371.11-395,169-165,520.22

Finding the Fourth Proportional to 286,371.11, 395,169 and 165,520.22

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Solution

The fourth proportional to 286,371.11, 395,169 and 165,520.22 is: 228,404.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,371.11 : 395,169 = 165,520.22 : x
  2. Step 2: Convert to fraction form
    286,371.11/395,169 = 165,520.22/x
  3. Step 3: Cross multiply
    286,371.11x = 395,169 × 165,520.22
  4. Step 4: Simplify right side
    286,371.11x = 65,408,459,817.18
  5. Step 5: Solve for x
    x = 65,408,459,817.18/286,371.11
  6. Step 6: Final answer
    x = 228,404.53

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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.