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Finding the Fourth Proportional to 325,634.80, 489,035.40 and 236,988.40

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Solution

The fourth proportional to 325,634.80, 489,035.40 and 236,988.40 is: 355,907.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,634.80 : 489,035.40 = 236,988.40 : x
  2. Step 2: Convert to fraction form
    325,634.80/489,035.40 = 236,988.40/x
  3. Step 3: Cross multiply
    325,634.80x = 489,035.40 × 236,988.40
  4. Step 4: Simplify right side
    325,634.80x = 115,895,716,989.36
  5. Step 5: Solve for x
    x = 115,895,716,989.36/325,634.80
  6. Step 6: Final answer
    x = 355,907.04

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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.