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Finding the Third Proportional to 255,720.47 and 383,580.66

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Solution

The third proportional to 255,720.47 and 383,580.66 is: 575,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,720.47 : 383,580.66 = 383,580.66 : x
  2. Step 2: Convert to fraction form
    255,720.47/383,580.66 = 383,580.66/x
  3. Step 3: Cross multiply
    255,720.47x = 383,580.66 × 383,580.66
  4. Step 4: Simplify right side
    255,720.47x = 147,134,119,849.18
  5. Step 5: Solve for x
    x = 147,134,119,849.18/255,720.47
  6. Step 6: Final answer
    x = 575,370.91

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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.