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Finding the Fourth Proportional to 325,611.80, 488,417.70 and 136,039.40

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Solution

The fourth proportional to 325,611.80, 488,417.70 and 136,039.40 is: 204,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,611.80 : 488,417.70 = 136,039.40 : x
  2. Step 2: Convert to fraction form
    325,611.80/488,417.70 = 136,039.40/x
  3. Step 3: Cross multiply
    325,611.80x = 488,417.70 × 136,039.40
  4. Step 4: Simplify right side
    325,611.80x = 66,444,050,857.38
  5. Step 5: Solve for x
    x = 66,444,050,857.38/325,611.80
  6. Step 6: Final answer
    x = 204,059.10

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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.