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Finding the Third Proportional to 142,799 and 310,178

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Solution

The third proportional to 142,799 and 310,178 is: 673,746.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,799 : 310,178 = 310,178 : x
  2. Step 2: Convert to fraction form
    142,799/310,178 = 310,178/x
  3. Step 3: Cross multiply
    142,799x = 310,178 × 310,178
  4. Step 4: Simplify right side
    142,799x = 96,210,391,684
  5. Step 5: Solve for x
    x = 96,210,391,684/142,799
  6. Step 6: Final answer
    x = 673,746.96

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.