Home / 285,289.45-427,933.77-85,609.51

Finding the Fourth Proportional to 285,289.45, 427,933.77 and 85,609.51

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Solution

The fourth proportional to 285,289.45, 427,933.77 and 85,609.51 is: 128,414.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,289.45 : 427,933.77 = 85,609.51 : x
  2. Step 2: Convert to fraction form
    285,289.45/427,933.77 = 85,609.51/x
  3. Step 3: Cross multiply
    285,289.45x = 427,933.77 × 85,609.51
  4. Step 4: Simplify right side
    285,289.45x = 36,635,200,362.15
  5. Step 5: Solve for x
    x = 36,635,200,362.15/285,289.45
  6. Step 6: Final answer
    x = 128,414.14

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1.5x scale

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.