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Finding the Fourth Proportional to 356,647.35, 534,846.96 and 143,351.94

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Solution

The fourth proportional to 356,647.35, 534,846.96 and 143,351.94 is: 214,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,647.35 : 534,846.96 = 143,351.94 : x
  2. Step 2: Convert to fraction form
    356,647.35/534,846.96 = 143,351.94/x
  3. Step 3: Cross multiply
    356,647.35x = 534,846.96 × 143,351.94
  4. Step 4: Simplify right side
    356,647.35x = 76,671,349,319.10
  5. Step 5: Solve for x
    x = 76,671,349,319.10/356,647.35
  6. Step 6: Final answer
    x = 214,978.04

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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.