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Finding the Third Proportional to 145,695 and 317,865

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Solution

The third proportional to 145,695 and 317,865 is: 693,490.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,695 : 317,865 = 317,865 : x
  2. Step 2: Convert to fraction form
    145,695/317,865 = 317,865/x
  3. Step 3: Cross multiply
    145,695x = 317,865 × 317,865
  4. Step 4: Simplify right side
    145,695x = 101,038,158,225
  5. Step 5: Solve for x
    x = 101,038,158,225/145,695
  6. Step 6: Final answer
    x = 693,490.91

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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.