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Finding the Third Proportional to 288,321.50 and 430,095.50

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Solution

The third proportional to 288,321.50 and 430,095.50 is: 641,582.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,321.50 : 430,095.50 = 430,095.50 : x
  2. Step 2: Convert to fraction form
    288,321.50/430,095.50 = 430,095.50/x
  3. Step 3: Cross multiply
    288,321.50x = 430,095.50 × 430,095.50
  4. Step 4: Simplify right side
    288,321.50x = 184,982,139,120.25
  5. Step 5: Solve for x
    x = 184,982,139,120.25/288,321.50
  6. Step 6: Final answer
    x = 641,582.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.