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Finding the Third Proportional to 296,136 and 436,428

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Solution

The third proportional to 296,136 and 436,428 is: 643,182.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,136 : 436,428 = 436,428 : x
  2. Step 2: Convert to fraction form
    296,136/436,428 = 436,428/x
  3. Step 3: Cross multiply
    296,136x = 436,428 × 436,428
  4. Step 4: Simplify right side
    296,136x = 190,469,399,184
  5. Step 5: Solve for x
    x = 190,469,399,184/296,136
  6. Step 6: Final answer
    x = 643,182.18

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.