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Finding the Fourth Proportional to 345,114.72, 517,672.44 and 108,478.08

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Solution

The fourth proportional to 345,114.72, 517,672.44 and 108,478.08 is: 162,717.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,114.72 : 517,672.44 = 108,478.08 : x
  2. Step 2: Convert to fraction form
    345,114.72/517,672.44 = 108,478.08/x
  3. Step 3: Cross multiply
    345,114.72x = 517,672.44 × 108,478.08
  4. Step 4: Simplify right side
    345,114.72x = 56,156,112,360.12
  5. Step 5: Solve for x
    x = 56,156,112,360.12/345,114.72
  6. Step 6: Final answer
    x = 162,717.23

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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.