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Finding the Third Proportional to 356,220 and 553,560.75

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Solution

The third proportional to 356,220 and 553,560.75 is: 860,225.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,220 : 553,560.75 = 553,560.75 : x
  2. Step 2: Convert to fraction form
    356,220/553,560.75 = 553,560.75/x
  3. Step 3: Cross multiply
    356,220x = 553,560.75 × 553,560.75
  4. Step 4: Simplify right side
    356,220x = 306,429,503,940.56
  5. Step 5: Solve for x
    x = 306,429,503,940.56/356,220
  6. Step 6: Final answer
    x = 860,225.43

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.