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Finding the Third Proportional to 355,108.50 and 478,442.25

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Solution

The third proportional to 355,108.50 and 478,442.25 is: 644,611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,108.50 : 478,442.25 = 478,442.25 : x
  2. Step 2: Convert to fraction form
    355,108.50/478,442.25 = 478,442.25/x
  3. Step 3: Cross multiply
    355,108.50x = 478,442.25 × 478,442.25
  4. Step 4: Simplify right side
    355,108.50x = 228,906,986,585.06
  5. Step 5: Solve for x
    x = 228,906,986,585.06/355,108.50
  6. Step 6: Final answer
    x = 644,611.40

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.