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Finding the Third Proportional to 348,387 and 509,136

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Solution

The third proportional to 348,387 and 509,136 is: 744,056.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,387 : 509,136 = 509,136 : x
  2. Step 2: Convert to fraction form
    348,387/509,136 = 509,136/x
  3. Step 3: Cross multiply
    348,387x = 509,136 × 509,136
  4. Step 4: Simplify right side
    348,387x = 259,219,466,496
  5. Step 5: Solve for x
    x = 259,219,466,496/348,387
  6. Step 6: Final answer
    x = 744,056.08

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.