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Finding the Fourth Proportional to 345,090.30, 517,927.05 and 134,879.10

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Solution

The fourth proportional to 345,090.30, 517,927.05 and 134,879.10 is: 202,432.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,090.30 : 517,927.05 = 134,879.10 : x
  2. Step 2: Convert to fraction form
    345,090.30/517,927.05 = 134,879.10/x
  3. Step 3: Cross multiply
    345,090.30x = 517,927.05 × 134,879.10
  4. Step 4: Simplify right side
    345,090.30x = 69,857,534,369.66
  5. Step 5: Solve for x
    x = 69,857,534,369.66/345,090.30
  6. Step 6: Final answer
    x = 202,432.62

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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.