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Finding the Fourth Proportional to 230,453.88, 318,027.72 and 128,485.77

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Solution

The fourth proportional to 230,453.88, 318,027.72 and 128,485.77 is: 177,311.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,453.88 : 318,027.72 = 128,485.77 : x
  2. Step 2: Convert to fraction form
    230,453.88/318,027.72 = 128,485.77/x
  3. Step 3: Cross multiply
    230,453.88x = 318,027.72 × 128,485.77
  4. Step 4: Simplify right side
    230,453.88x = 40,862,036,485.54
  5. Step 5: Solve for x
    x = 40,862,036,485.54/230,453.88
  6. Step 6: Final answer
    x = 177,311.12

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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.