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Finding the Third Proportional to 99,428 and 150,590

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Solution

The third proportional to 99,428 and 150,590 is: 228,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,428 : 150,590 = 150,590 : x
  2. Step 2: Convert to fraction form
    99,428/150,590 = 150,590/x
  3. Step 3: Cross multiply
    99,428x = 150,590 × 150,590
  4. Step 4: Simplify right side
    99,428x = 22,677,348,100
  5. Step 5: Solve for x
    x = 22,677,348,100/99,428
  6. Step 6: Final answer
    x = 228,078.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.