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Finding the Fourth Proportional to 343,564.56, 515,382.12 and 118,924.64

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Solution

The fourth proportional to 343,564.56, 515,382.12 and 118,924.64 is: 178,399.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,564.56 : 515,382.12 = 118,924.64 : x
  2. Step 2: Convert to fraction form
    343,564.56/515,382.12 = 118,924.64/x
  3. Step 3: Cross multiply
    343,564.56x = 515,382.12 × 118,924.64
  4. Step 4: Simplify right side
    343,564.56x = 61,291,633,083.44
  5. Step 5: Solve for x
    x = 61,291,633,083.44/343,564.56
  6. Step 6: Final answer
    x = 178,399.17

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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.