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Finding the Fourth Proportional to 230,665.55, 318,311.24 and 135,235.80

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Solution

The fourth proportional to 230,665.55, 318,311.24 and 135,235.80 is: 186,621.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,665.55 : 318,311.24 = 135,235.80 : x
  2. Step 2: Convert to fraction form
    230,665.55/318,311.24 = 135,235.80/x
  3. Step 3: Cross multiply
    230,665.55x = 318,311.24 × 135,235.80
  4. Step 4: Simplify right side
    230,665.55x = 43,047,074,514.21
  5. Step 5: Solve for x
    x = 43,047,074,514.21/230,665.55
  6. Step 6: Final answer
    x = 186,621.17

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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.