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Finding the Third Proportional to 307,411.50 and 470,445

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Solution

The third proportional to 307,411.50 and 470,445 is: 719,942.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,411.50 : 470,445 = 470,445 : x
  2. Step 2: Convert to fraction form
    307,411.50/470,445 = 470,445/x
  3. Step 3: Cross multiply
    307,411.50x = 470,445 × 470,445
  4. Step 4: Simplify right side
    307,411.50x = 221,318,498,025
  5. Step 5: Solve for x
    x = 221,318,498,025/307,411.50
  6. Step 6: Final answer
    x = 719,942.16

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.