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Finding the Third Proportional to 142,730 and 310,888

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Solution

The third proportional to 142,730 and 310,888 is: 677,162.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,730 : 310,888 = 310,888 : x
  2. Step 2: Convert to fraction form
    142,730/310,888 = 310,888/x
  3. Step 3: Cross multiply
    142,730x = 310,888 × 310,888
  4. Step 4: Simplify right side
    142,730x = 96,651,348,544
  5. Step 5: Solve for x
    x = 96,651,348,544/142,730
  6. Step 6: Final answer
    x = 677,162.11

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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.