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Finding the Fourth Proportional to 380,404.80, 570,636.36 and 114,145.92

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Solution

The fourth proportional to 380,404.80, 570,636.36 and 114,145.92 is: 171,227.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,404.80 : 570,636.36 = 114,145.92 : x
  2. Step 2: Convert to fraction form
    380,404.80/570,636.36 = 114,145.92/x
  3. Step 3: Cross multiply
    380,404.80x = 570,636.36 × 114,145.92
  4. Step 4: Simplify right side
    380,404.80x = 65,135,812,297.65
  5. Step 5: Solve for x
    x = 65,135,812,297.65/380,404.80
  6. Step 6: Final answer
    x = 171,227.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.