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Finding the Fourth Proportional to 484,817.80, 727,226.70 and 218,878.60

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Solution

The fourth proportional to 484,817.80, 727,226.70 and 218,878.60 is: 328,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,817.80 : 727,226.70 = 218,878.60 : x
  2. Step 2: Convert to fraction form
    484,817.80/727,226.70 = 218,878.60/x
  3. Step 3: Cross multiply
    484,817.80x = 727,226.70 × 218,878.60
  4. Step 4: Simplify right side
    484,817.80x = 159,174,361,978.62
  5. Step 5: Solve for x
    x = 159,174,361,978.62/484,817.80
  6. Step 6: Final answer
    x = 328,317.90

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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.