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Finding the Fourth Proportional to 538,978.20, 808,467.30 and 184,003.80

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Solution

The fourth proportional to 538,978.20, 808,467.30 and 184,003.80 is: 276,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,978.20 : 808,467.30 = 184,003.80 : x
  2. Step 2: Convert to fraction form
    538,978.20/808,467.30 = 184,003.80/x
  3. Step 3: Cross multiply
    538,978.20x = 808,467.30 × 184,003.80
  4. Step 4: Simplify right side
    538,978.20x = 148,761,055,375.74
  5. Step 5: Solve for x
    x = 148,761,055,375.74/538,978.20
  6. Step 6: Final answer
    x = 276,005.70

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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.