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Finding the Fourth Proportional to 230,376.21, 317,944.98 and 128,410.98

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Solution

The fourth proportional to 230,376.21, 317,944.98 and 128,410.98 is: 177,221.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,376.21 : 317,944.98 = 128,410.98 : x
  2. Step 2: Convert to fraction form
    230,376.21/317,944.98 = 128,410.98/x
  3. Step 3: Cross multiply
    230,376.21x = 317,944.98 × 128,410.98
  4. Step 4: Simplify right side
    230,376.21x = 40,827,626,467.88
  5. Step 5: Solve for x
    x = 40,827,626,467.88/230,376.21
  6. Step 6: Final answer
    x = 177,221.54

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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.