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Finding the Fourth Proportional to 270,647.64, 405,860.46 and 81,041.22

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Solution

The fourth proportional to 270,647.64, 405,860.46 and 81,041.22 is: 121,528.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,647.64 : 405,860.46 = 81,041.22 : x
  2. Step 2: Convert to fraction form
    270,647.64/405,860.46 = 81,041.22/x
  3. Step 3: Cross multiply
    270,647.64x = 405,860.46 × 81,041.22
  4. Step 4: Simplify right side
    270,647.64x = 32,891,426,828.16
  5. Step 5: Solve for x
    x = 32,891,426,828.16/270,647.64
  6. Step 6: Final answer
    x = 121,528.59

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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.