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Finding the Fourth Proportional to 353,405.12, 530,105.20 and 143,040.02

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Solution

The fourth proportional to 353,405.12, 530,105.20 and 143,040.02 is: 214,559.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,405.12 : 530,105.20 = 143,040.02 : x
  2. Step 2: Convert to fraction form
    353,405.12/530,105.20 = 143,040.02/x
  3. Step 3: Cross multiply
    353,405.12x = 530,105.20 × 143,040.02
  4. Step 4: Simplify right side
    353,405.12x = 75,826,255,401.98
  5. Step 5: Solve for x
    x = 75,826,255,401.98/353,405.12
  6. Step 6: Final answer
    x = 214,559.02

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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.