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Finding the Fourth Proportional to 423,453.36, 634,696.86 and 170,571.90

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Solution

The fourth proportional to 423,453.36, 634,696.86 and 170,571.90 is: 255,663.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,453.36 : 634,696.86 = 170,571.90 : x
  2. Step 2: Convert to fraction form
    423,453.36/634,696.86 = 170,571.90/x
  3. Step 3: Cross multiply
    423,453.36x = 634,696.86 × 170,571.90
  4. Step 4: Simplify right side
    423,453.36x = 108,261,449,334.23
  5. Step 5: Solve for x
    x = 108,261,449,334.23/423,453.36
  6. Step 6: Final answer
    x = 255,663.22

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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.