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Finding the Fourth Proportional to 281,082.71, 421,653.62 and 91,557.86

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Solution

The fourth proportional to 281,082.71, 421,653.62 and 91,557.86 is: 137,346.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,082.71 : 421,653.62 = 91,557.86 : x
  2. Step 2: Convert to fraction form
    281,082.71/421,653.62 = 91,557.86/x
  3. Step 3: Cross multiply
    281,082.71x = 421,653.62 × 91,557.86
  4. Step 4: Simplify right side
    281,082.71x = 38,605,703,108.45
  5. Step 5: Solve for x
    x = 38,605,703,108.45/281,082.71
  6. Step 6: Final answer
    x = 137,346.42

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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.