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Finding the Fourth Proportional to 278,883.02, 384,861 and 151,558.60

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Solution

The fourth proportional to 278,883.02, 384,861 and 151,558.60 is: 209,152.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,883.02 : 384,861 = 151,558.60 : x
  2. Step 2: Convert to fraction form
    278,883.02/384,861 = 151,558.60/x
  3. Step 3: Cross multiply
    278,883.02x = 384,861 × 151,558.60
  4. Step 4: Simplify right side
    278,883.02x = 58,328,994,354.60
  5. Step 5: Solve for x
    x = 58,328,994,354.60/278,883.02
  6. Step 6: Final answer
    x = 209,152.19

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1.5x scale

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.