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Finding the Fourth Proportional to 421,619.04, 632,336.96 and 133,453.08

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Solution

The fourth proportional to 421,619.04, 632,336.96 and 133,453.08 is: 200,150.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,619.04 : 632,336.96 = 133,453.08 : x
  2. Step 2: Convert to fraction form
    421,619.04/632,336.96 = 133,453.08/x
  3. Step 3: Cross multiply
    421,619.04x = 632,336.96 × 133,453.08
  4. Step 4: Simplify right side
    421,619.04x = 84,387,314,909.84
  5. Step 5: Solve for x
    x = 84,387,314,909.84/421,619.04
  6. Step 6: Final answer
    x = 200,150.63

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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.