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Finding the Fourth Proportional to 486,110.80, 728,820.60 and 186,475.60

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Solution

The fourth proportional to 486,110.80, 728,820.60 and 186,475.60 is: 279,580.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,110.80 : 728,820.60 = 186,475.60 : x
  2. Step 2: Convert to fraction form
    486,110.80/728,820.60 = 186,475.60/x
  3. Step 3: Cross multiply
    486,110.80x = 728,820.60 × 186,475.60
  4. Step 4: Simplify right side
    486,110.80x = 135,907,258,677.36
  5. Step 5: Solve for x
    x = 135,907,258,677.36/486,110.80
  6. Step 6: Final answer
    x = 279,580.83

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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.