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Finding the Fourth Proportional to 143,420.33, 215,130.39 and 43,580.12

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Solution

The fourth proportional to 143,420.33, 215,130.39 and 43,580.12 is: 65,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,420.33 : 215,130.39 = 43,580.12 : x
  2. Step 2: Convert to fraction form
    143,420.33/215,130.39 = 43,580.12/x
  3. Step 3: Cross multiply
    143,420.33x = 215,130.39 × 43,580.12
  4. Step 4: Simplify right side
    143,420.33x = 9,375,408,211.85
  5. Step 5: Solve for x
    x = 9,375,408,211.85/143,420.33
  6. Step 6: Final answer
    x = 65,370.15

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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.