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Finding the Fourth Proportional to 268,989.40, 403,367.42 and 91,448.76

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Solution

The fourth proportional to 268,989.40, 403,367.42 and 91,448.76 is: 137,133.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,989.40 : 403,367.42 = 91,448.76 : x
  2. Step 2: Convert to fraction form
    268,989.40/403,367.42 = 91,448.76/x
  3. Step 3: Cross multiply
    268,989.40x = 403,367.42 × 91,448.76
  4. Step 4: Simplify right side
    268,989.40x = 36,887,450,383.40
  5. Step 5: Solve for x
    x = 36,887,450,383.40/268,989.40
  6. Step 6: Final answer
    x = 137,133.47

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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.