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Finding the Fourth Proportional to 349,438.56, 524,154.96 and 100,120.80

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Solution

The fourth proportional to 349,438.56, 524,154.96 and 100,120.80 is: 150,180.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,438.56 : 524,154.96 = 100,120.80 : x
  2. Step 2: Convert to fraction form
    349,438.56/524,154.96 = 100,120.80/x
  3. Step 3: Cross multiply
    349,438.56x = 524,154.96 × 100,120.80
  4. Step 4: Simplify right side
    349,438.56x = 52,478,813,919.17
  5. Step 5: Solve for x
    x = 52,478,813,919.17/349,438.56
  6. Step 6: Final answer
    x = 150,180.37

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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.