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Finding the Fourth Proportional to 281,326.37, 422,026.62 and 91,720.16

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Solution

The fourth proportional to 281,326.37, 422,026.62 and 91,720.16 is: 137,592.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,326.37 : 422,026.62 = 91,720.16 : x
  2. Step 2: Convert to fraction form
    281,326.37/422,026.62 = 91,720.16/x
  3. Step 3: Cross multiply
    281,326.37x = 422,026.62 × 91,720.16
  4. Step 4: Simplify right side
    281,326.37x = 38,708,346,541.93
  5. Step 5: Solve for x
    x = 38,708,346,541.93/281,326.37
  6. Step 6: Final answer
    x = 137,592.32

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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.