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Finding the Third Proportional to 258,473 and 386,160

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Solution

The third proportional to 258,473 and 386,160 is: 576,925.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,473 : 386,160 = 386,160 : x
  2. Step 2: Convert to fraction form
    258,473/386,160 = 386,160/x
  3. Step 3: Cross multiply
    258,473x = 386,160 × 386,160
  4. Step 4: Simplify right side
    258,473x = 149,119,545,600
  5. Step 5: Solve for x
    x = 149,119,545,600/258,473
  6. Step 6: Final answer
    x = 576,925.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.