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Finding the Third Proportional to 256,083 and 387,646.50

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Solution

The third proportional to 256,083 and 387,646.50 is: 586,801.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,083 : 387,646.50 = 387,646.50 : x
  2. Step 2: Convert to fraction form
    256,083/387,646.50 = 387,646.50/x
  3. Step 3: Cross multiply
    256,083x = 387,646.50 × 387,646.50
  4. Step 4: Simplify right side
    256,083x = 150,269,808,962.25
  5. Step 5: Solve for x
    x = 150,269,808,962.25/256,083
  6. Step 6: Final answer
    x = 586,801.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.