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Finding the Third Proportional to 255,506 and 392,187

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Solution

The third proportional to 255,506 and 392,187 is: 601,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,506 : 392,187 = 392,187 : x
  2. Step 2: Convert to fraction form
    255,506/392,187 = 392,187/x
  3. Step 3: Cross multiply
    255,506x = 392,187 × 392,187
  4. Step 4: Simplify right side
    255,506x = 153,810,642,969
  5. Step 5: Solve for x
    x = 153,810,642,969/255,506
  6. Step 6: Final answer
    x = 601,984.47

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.