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Finding the Third Proportional to 220,657.50 and 342,285.75

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Solution

The third proportional to 220,657.50 and 342,285.75 is: 530,956.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,657.50 : 342,285.75 = 342,285.75 : x
  2. Step 2: Convert to fraction form
    220,657.50/342,285.75 = 342,285.75/x
  3. Step 3: Cross multiply
    220,657.50x = 342,285.75 × 342,285.75
  4. Step 4: Simplify right side
    220,657.50x = 117,159,534,653.06
  5. Step 5: Solve for x
    x = 117,159,534,653.06/220,657.50
  6. Step 6: Final answer
    x = 530,956.50

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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.