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Finding the Fourth Proportional to 353,379.78, 530,069.67 and 143,165.34

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Solution

The fourth proportional to 353,379.78, 530,069.67 and 143,165.34 is: 214,748.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,379.78 : 530,069.67 = 143,165.34 : x
  2. Step 2: Convert to fraction form
    353,379.78/530,069.67 = 143,165.34/x
  3. Step 3: Cross multiply
    353,379.78x = 530,069.67 × 143,165.34
  4. Step 4: Simplify right side
    353,379.78x = 75,887,604,529.24
  5. Step 5: Solve for x
    x = 75,887,604,529.24/353,379.78
  6. Step 6: Final answer
    x = 214,748.01

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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.