Home / 486,021.60-729,032.40-131,022.90

Finding the Fourth Proportional to 486,021.60, 729,032.40 and 131,022.90

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Solution

The fourth proportional to 486,021.60, 729,032.40 and 131,022.90 is: 196,534.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,021.60 : 729,032.40 = 131,022.90 : x
  2. Step 2: Convert to fraction form
    486,021.60/729,032.40 = 131,022.90/x
  3. Step 3: Cross multiply
    486,021.60x = 729,032.40 × 131,022.90
  4. Step 4: Simplify right side
    486,021.60x = 95,519,939,241.96
  5. Step 5: Solve for x
    x = 95,519,939,241.96/486,021.60
  6. Step 6: Final answer
    x = 196,534.35

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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.