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Finding the Third Proportional to 306,061.50 and 430,239.75

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Solution

The third proportional to 306,061.50 and 430,239.75 is: 604,800.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,061.50 : 430,239.75 = 430,239.75 : x
  2. Step 2: Convert to fraction form
    306,061.50/430,239.75 = 430,239.75/x
  3. Step 3: Cross multiply
    306,061.50x = 430,239.75 × 430,239.75
  4. Step 4: Simplify right side
    306,061.50x = 185,106,242,480.06
  5. Step 5: Solve for x
    x = 185,106,242,480.06/306,061.50
  6. Step 6: Final answer
    x = 604,800.81

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.