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Finding the Fourth Proportional to 538,978.20, 808,661.70 and 223,531.80

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Solution

The fourth proportional to 538,978.20, 808,661.70 and 223,531.80 is: 335,378.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,978.20 : 808,661.70 = 223,531.80 : x
  2. Step 2: Convert to fraction form
    538,978.20/808,661.70 = 223,531.80/x
  3. Step 3: Cross multiply
    538,978.20x = 808,661.70 × 223,531.80
  4. Step 4: Simplify right side
    538,978.20x = 180,761,605,392.06
  5. Step 5: Solve for x
    x = 180,761,605,392.06/538,978.20
  6. Step 6: Final answer
    x = 335,378.32

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