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Finding the Third Proportional to 321,999.75 and 473,152.50

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Solution

The third proportional to 321,999.75 and 473,152.50 is: 695,259.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,999.75 : 473,152.50 = 473,152.50 : x
  2. Step 2: Convert to fraction form
    321,999.75/473,152.50 = 473,152.50/x
  3. Step 3: Cross multiply
    321,999.75x = 473,152.50 × 473,152.50
  4. Step 4: Simplify right side
    321,999.75x = 223,873,288,256.25
  5. Step 5: Solve for x
    x = 223,873,288,256.25/321,999.75
  6. Step 6: Final answer
    x = 695,259.20

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.