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Finding the Third Proportional to 221,835 and 485,643.75

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Solution

The third proportional to 221,835 and 485,643.75 is: 1,063,176.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,835 : 485,643.75 = 485,643.75 : x
  2. Step 2: Convert to fraction form
    221,835/485,643.75 = 485,643.75/x
  3. Step 3: Cross multiply
    221,835x = 485,643.75 × 485,643.75
  4. Step 4: Simplify right side
    221,835x = 235,849,851,914.06
  5. Step 5: Solve for x
    x = 235,849,851,914.06/221,835
  6. Step 6: Final answer
    x = 1,063,176.92

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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.