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Finding the Fourth Proportional to 288,051.60, 431,202.60 and 256,558.80

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Solution

The fourth proportional to 288,051.60, 431,202.60 and 256,558.80 is: 384,059.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,051.60 : 431,202.60 = 256,558.80 : x
  2. Step 2: Convert to fraction form
    288,051.60/431,202.60 = 256,558.80/x
  3. Step 3: Cross multiply
    288,051.60x = 431,202.60 × 256,558.80
  4. Step 4: Simplify right side
    288,051.60x = 110,628,821,612.88
  5. Step 5: Solve for x
    x = 110,628,821,612.88/288,051.60
  6. Step 6: Final answer
    x = 384,059.04

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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.