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Finding the Fourth Proportional to 378,810.60, 569,003.22 and 300,472.26

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Solution

The fourth proportional to 378,810.60, 569,003.22 and 300,472.26 is: 451,332.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,810.60 : 569,003.22 = 300,472.26 : x
  2. Step 2: Convert to fraction form
    378,810.60/569,003.22 = 300,472.26/x
  3. Step 3: Cross multiply
    378,810.60x = 569,003.22 × 300,472.26
  4. Step 4: Simplify right side
    378,810.60x = 170,969,683,460.68
  5. Step 5: Solve for x
    x = 170,969,683,460.68/378,810.60
  6. Step 6: Final answer
    x = 451,332.89

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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.