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Finding the Third Proportional to 255,140 and 558,920

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Solution

The third proportional to 255,140 and 558,920 is: 1,224,392.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,140 : 558,920 = 558,920 : x
  2. Step 2: Convert to fraction form
    255,140/558,920 = 558,920/x
  3. Step 3: Cross multiply
    255,140x = 558,920 × 558,920
  4. Step 4: Simplify right side
    255,140x = 312,391,566,400
  5. Step 5: Solve for x
    x = 312,391,566,400/255,140
  6. Step 6: Final answer
    x = 1,224,392.75

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.