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Finding the Fourth Proportional to 199,399.60, 299,099.40 and 143,412.40

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Solution

The fourth proportional to 199,399.60, 299,099.40 and 143,412.40 is: 215,118.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,399.60 : 299,099.40 = 143,412.40 : x
  2. Step 2: Convert to fraction form
    199,399.60/299,099.40 = 143,412.40/x
  3. Step 3: Cross multiply
    199,399.60x = 299,099.40 × 143,412.40
  4. Step 4: Simplify right side
    199,399.60x = 42,894,562,792.56
  5. Step 5: Solve for x
    x = 42,894,562,792.56/199,399.60
  6. Step 6: Final answer
    x = 215,118.60

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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.