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Finding the Fourth Proportional to 230,336.91, 317,860.63 and 128,360.14

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Solution

The fourth proportional to 230,336.91, 317,860.63 and 128,360.14 is: 177,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,336.91 : 317,860.63 = 128,360.14 : x
  2. Step 2: Convert to fraction form
    230,336.91/317,860.63 = 128,360.14/x
  3. Step 3: Cross multiply
    230,336.91x = 317,860.63 × 128,360.14
  4. Step 4: Simplify right side
    230,336.91x = 40,800,633,977.77
  5. Step 5: Solve for x
    x = 40,800,633,977.77/230,336.91
  6. Step 6: Final answer
    x = 177,134.59

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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.