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Finding the Fourth Proportional to 484,435.40, 726,134.70 and 218,150.60

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Solution

The fourth proportional to 484,435.40, 726,134.70 and 218,150.60 is: 326,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,435.40 : 726,134.70 = 218,150.60 : x
  2. Step 2: Convert to fraction form
    484,435.40/726,134.70 = 218,150.60/x
  3. Step 3: Cross multiply
    484,435.40x = 726,134.70 × 218,150.60
  4. Step 4: Simplify right side
    484,435.40x = 158,406,720,485.82
  5. Step 5: Solve for x
    x = 158,406,720,485.82/484,435.40
  6. Step 6: Final answer
    x = 326,992.45

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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.