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Finding the Third Proportional to 189,205 and 292,987

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Solution

The third proportional to 189,205 and 292,987 is: 453,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,205 : 292,987 = 292,987 : x
  2. Step 2: Convert to fraction form
    189,205/292,987 = 292,987/x
  3. Step 3: Cross multiply
    189,205x = 292,987 × 292,987
  4. Step 4: Simplify right side
    189,205x = 85,841,382,169
  5. Step 5: Solve for x
    x = 85,841,382,169/189,205
  6. Step 6: Final answer
    x = 453,695.10

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.