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Finding the Fourth Proportional to 280,883.20, 387,276.80 and 264,601.60

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Solution

The fourth proportional to 280,883.20, 387,276.80 and 264,601.60 is: 364,828.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,883.20 : 387,276.80 = 264,601.60 : x
  2. Step 2: Convert to fraction form
    280,883.20/387,276.80 = 264,601.60/x
  3. Step 3: Cross multiply
    280,883.20x = 387,276.80 × 264,601.60
  4. Step 4: Simplify right side
    280,883.20x = 102,474,060,922.88
  5. Step 5: Solve for x
    x = 102,474,060,922.88/280,883.20
  6. Step 6: Final answer
    x = 364,828.02

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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.