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Finding the Fourth Proportional to 230,588.64, 318,208.08 and 129,986.72

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Solution

The fourth proportional to 230,588.64, 318,208.08 and 129,986.72 is: 179,379.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,588.64 : 318,208.08 = 129,986.72 : x
  2. Step 2: Convert to fraction form
    230,588.64/318,208.08 = 129,986.72/x
  3. Step 3: Cross multiply
    230,588.64x = 318,208.08 × 129,986.72
  4. Step 4: Simplify right side
    230,588.64x = 41,362,824,596.70
  5. Step 5: Solve for x
    x = 41,362,824,596.70/230,588.64
  6. Step 6: Final answer
    x = 179,379.28

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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.