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Finding the Fourth Proportional to 143,138.40, 214,270.20 and 143,138.40

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Solution

The fourth proportional to 143,138.40, 214,270.20 and 143,138.40 is: 214,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,138.40 : 214,270.20 = 143,138.40 : x
  2. Step 2: Convert to fraction form
    143,138.40/214,270.20 = 143,138.40/x
  3. Step 3: Cross multiply
    143,138.40x = 214,270.20 × 143,138.40
  4. Step 4: Simplify right side
    143,138.40x = 30,670,293,595.68
  5. Step 5: Solve for x
    x = 30,670,293,595.68/143,138.40
  6. Step 6: Final answer
    x = 214,270.20

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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.