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Finding the Third Proportional to 142,070 and 306,280

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Solution

The third proportional to 142,070 and 306,280 is: 660,290.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,070 : 306,280 = 306,280 : x
  2. Step 2: Convert to fraction form
    142,070/306,280 = 306,280/x
  3. Step 3: Cross multiply
    142,070x = 306,280 × 306,280
  4. Step 4: Simplify right side
    142,070x = 93,807,438,400
  5. Step 5: Solve for x
    x = 93,807,438,400/142,070
  6. Step 6: Final answer
    x = 660,290.27

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.