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Finding the Third Proportional to 155,715 and 340,023

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Solution

The third proportional to 155,715 and 340,023 is: 742,482.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,715 : 340,023 = 340,023 : x
  2. Step 2: Convert to fraction form
    155,715/340,023 = 340,023/x
  3. Step 3: Cross multiply
    155,715x = 340,023 × 340,023
  4. Step 4: Simplify right side
    155,715x = 115,615,640,529
  5. Step 5: Solve for x
    x = 115,615,640,529/155,715
  6. Step 6: Final answer
    x = 742,482.36

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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.