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Finding the Third Proportional to 216,109.63 and 317,157.88

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Solution

The third proportional to 216,109.63 and 317,157.88 is: 465,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,109.63 : 317,157.88 = 317,157.88 : x
  2. Step 2: Convert to fraction form
    216,109.63/317,157.88 = 317,157.88/x
  3. Step 3: Cross multiply
    216,109.63x = 317,157.88 × 317,157.88
  4. Step 4: Simplify right side
    216,109.63x = 100,589,117,674.52
  5. Step 5: Solve for x
    x = 100,589,117,674.52/216,109.63
  6. Step 6: Final answer
    x = 465,454.13

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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.