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Finding the Fourth Proportional to 323,131.75, 484,697.63 and 145,431.12

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Solution

The fourth proportional to 323,131.75, 484,697.63 and 145,431.12 is: 218,146.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,131.75 : 484,697.63 = 145,431.12 : x
  2. Step 2: Convert to fraction form
    323,131.75/484,697.63 = 145,431.12/x
  3. Step 3: Cross multiply
    323,131.75x = 484,697.63 × 145,431.12
  4. Step 4: Simplify right side
    323,131.75x = 70,490,119,192.25
  5. Step 5: Solve for x
    x = 70,490,119,192.25/323,131.75
  6. Step 6: Final answer
    x = 218,146.68

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1.5x scale

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.