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Finding the Third Proportional to 380,148 and 531,470

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Solution

The third proportional to 380,148 and 531,470 is: 743,027.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,148 : 531,470 = 531,470 : x
  2. Step 2: Convert to fraction form
    380,148/531,470 = 531,470/x
  3. Step 3: Cross multiply
    380,148x = 531,470 × 531,470
  4. Step 4: Simplify right side
    380,148x = 282,460,360,900
  5. Step 5: Solve for x
    x = 282,460,360,900/380,148
  6. Step 6: Final answer
    x = 743,027.35

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.