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Finding the Fourth Proportional to 230,216.40, 317,697.48 and 129,615.12

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Solution

The fourth proportional to 230,216.40, 317,697.48 and 129,615.12 is: 178,868.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,216.40 : 317,697.48 = 129,615.12 : x
  2. Step 2: Convert to fraction form
    230,216.40/317,697.48 = 129,615.12/x
  3. Step 3: Cross multiply
    230,216.40x = 317,697.48 × 129,615.12
  4. Step 4: Simplify right side
    230,216.40x = 41,178,396,993.90
  5. Step 5: Solve for x
    x = 41,178,396,993.90/230,216.40
  6. Step 6: Final answer
    x = 178,868.22

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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.