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Finding the Fourth Proportional to 343,683.22, 515,317.74 and 154,109.28

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Solution

The fourth proportional to 343,683.22, 515,317.74 and 154,109.28 is: 231,071.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,683.22 : 515,317.74 = 154,109.28 : x
  2. Step 2: Convert to fraction form
    343,683.22/515,317.74 = 154,109.28/x
  3. Step 3: Cross multiply
    343,683.22x = 515,317.74 × 154,109.28
  4. Step 4: Simplify right side
    343,683.22x = 79,415,245,882.63
  5. Step 5: Solve for x
    x = 79,415,245,882.63/343,683.22
  6. Step 6: Final answer
    x = 231,071.06

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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.