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Finding the Third Proportional to 156,988 and 343,136

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Solution

The third proportional to 156,988 and 343,136 is: 750,008.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,988 : 343,136 = 343,136 : x
  2. Step 2: Convert to fraction form
    156,988/343,136 = 343,136/x
  3. Step 3: Cross multiply
    156,988x = 343,136 × 343,136
  4. Step 4: Simplify right side
    156,988x = 117,742,314,496
  5. Step 5: Solve for x
    x = 117,742,314,496/156,988
  6. Step 6: Final answer
    x = 750,008.37

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.