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Finding the Fourth Proportional to 268,589.99, 402,889.62 and 91,101.57

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Solution

The fourth proportional to 268,589.99, 402,889.62 and 91,101.57 is: 136,653.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,589.99 : 402,889.62 = 91,101.57 : x
  2. Step 2: Convert to fraction form
    268,589.99/402,889.62 = 91,101.57/x
  3. Step 3: Cross multiply
    268,589.99x = 402,889.62 × 91,101.57
  4. Step 4: Simplify right side
    268,589.99x = 36,703,876,918.70
  5. Step 5: Solve for x
    x = 36,703,876,918.70/268,589.99
  6. Step 6: Final answer
    x = 136,653.93

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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.