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Finding the Third Proportional to 179,424 and 390,368

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Solution

The third proportional to 179,424 and 390,368 is: 849,313.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,424 : 390,368 = 390,368 : x
  2. Step 2: Convert to fraction form
    179,424/390,368 = 390,368/x
  3. Step 3: Cross multiply
    179,424x = 390,368 × 390,368
  4. Step 4: Simplify right side
    179,424x = 152,387,175,424
  5. Step 5: Solve for x
    x = 152,387,175,424/179,424
  6. Step 6: Final answer
    x = 849,313.22

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.