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Finding the Fourth Proportional to 229,143.84, 343,633.73 and 79,343.90

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Solution

The fourth proportional to 229,143.84, 343,633.73 and 79,343.90 is: 118,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,143.84 : 343,633.73 = 79,343.90 : x
  2. Step 2: Convert to fraction form
    229,143.84/343,633.73 = 79,343.90/x
  3. Step 3: Cross multiply
    229,143.84x = 343,633.73 × 79,343.90
  4. Step 4: Simplify right side
    229,143.84x = 27,265,240,309.75
  5. Step 5: Solve for x
    x = 27,265,240,309.75/229,143.84
  6. Step 6: Final answer
    x = 118,987.45

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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.