Home / 268,986.40-403,362.96-91,445.80

Finding the Fourth Proportional to 268,986.40, 403,362.96 and 91,445.80

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Solution

The fourth proportional to 268,986.40, 403,362.96 and 91,445.80 is: 137,129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,986.40 : 403,362.96 = 91,445.80 : x
  2. Step 2: Convert to fraction form
    268,986.40/403,362.96 = 91,445.80/x
  3. Step 3: Cross multiply
    268,986.40x = 403,362.96 × 91,445.80
  4. Step 4: Simplify right side
    268,986.40x = 36,885,848,567.57
  5. Step 5: Solve for x
    x = 36,885,848,567.57/268,986.40
  6. Step 6: Final answer
    x = 137,129.05

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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.