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Finding the Fourth Proportional to 379,490.90, 569,892.45 and 202,343.90

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Solution

The fourth proportional to 379,490.90, 569,892.45 and 202,343.90 is: 303,865.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,490.90 : 569,892.45 = 202,343.90 : x
  2. Step 2: Convert to fraction form
    379,490.90/569,892.45 = 202,343.90/x
  3. Step 3: Cross multiply
    379,490.90x = 569,892.45 × 202,343.90
  4. Step 4: Simplify right side
    379,490.90x = 115,314,260,913.56
  5. Step 5: Solve for x
    x = 115,314,260,913.56/379,490.90
  6. Step 6: Final answer
    x = 303,865.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.