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Finding the Fourth Proportional to 230,689.36, 318,351.40 and 130,087.36

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Solution

The fourth proportional to 230,689.36, 318,351.40 and 130,087.36 is: 179,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,689.36 : 318,351.40 = 130,087.36 : x
  2. Step 2: Convert to fraction form
    230,689.36/318,351.40 = 130,087.36/x
  3. Step 3: Cross multiply
    230,689.36x = 318,351.40 × 130,087.36
  4. Step 4: Simplify right side
    230,689.36x = 41,413,493,178.30
  5. Step 5: Solve for x
    x = 41,413,493,178.30/230,689.36
  6. Step 6: Final answer
    x = 179,520.60

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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.