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Finding the Fourth Proportional to 326,012.37, 488,895.70 and 136,485.80

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Solution

The fourth proportional to 326,012.37, 488,895.70 and 136,485.80 is: 204,677.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,012.37 : 488,895.70 = 136,485.80 : x
  2. Step 2: Convert to fraction form
    326,012.37/488,895.70 = 136,485.80/x
  3. Step 3: Cross multiply
    326,012.37x = 488,895.70 × 136,485.80
  4. Step 4: Simplify right side
    326,012.37x = 66,727,320,731.06
  5. Step 5: Solve for x
    x = 66,727,320,731.06/326,012.37
  6. Step 6: Final answer
    x = 204,677.27

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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.