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Finding the Fourth Proportional to 325,425.50, 488,146.95 and 103,809.50

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Solution

The fourth proportional to 325,425.50, 488,146.95 and 103,809.50 is: 155,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,425.50 : 488,146.95 = 103,809.50 : x
  2. Step 2: Convert to fraction form
    325,425.50/488,146.95 = 103,809.50/x
  3. Step 3: Cross multiply
    325,425.50x = 488,146.95 × 103,809.50
  4. Step 4: Simplify right side
    325,425.50x = 50,674,290,806.03
  5. Step 5: Solve for x
    x = 50,674,290,806.03/325,425.50
  6. Step 6: Final answer
    x = 155,717.03

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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.