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Finding the Fourth Proportional to 278,393.01, 384,183.36 and 151,068.60

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Solution

The fourth proportional to 278,393.01, 384,183.36 and 151,068.60 is: 208,475.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,393.01 : 384,183.36 = 151,068.60 : x
  2. Step 2: Convert to fraction form
    278,393.01/384,183.36 = 151,068.60/x
  3. Step 3: Cross multiply
    278,393.01x = 384,183.36 × 151,068.60
  4. Step 4: Simplify right side
    278,393.01x = 58,038,042,338.50
  5. Step 5: Solve for x
    x = 58,038,042,338.50/278,393.01
  6. Step 6: Final answer
    x = 208,475.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.