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Finding the Fourth Proportional to 280,579.04, 387,279.60 and 178,607.60

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Solution

The fourth proportional to 280,579.04, 387,279.60 and 178,607.60 is: 246,529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,579.04 : 387,279.60 = 178,607.60 : x
  2. Step 2: Convert to fraction form
    280,579.04/387,279.60 = 178,607.60/x
  3. Step 3: Cross multiply
    280,579.04x = 387,279.60 × 178,607.60
  4. Step 4: Simplify right side
    280,579.04x = 69,171,079,884.96
  5. Step 5: Solve for x
    x = 69,171,079,884.96/280,579.04
  6. Step 6: Final answer
    x = 246,529.75

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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.