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Finding the Fourth Proportional to 356,656.35, 534,860.46 and 143,360.94

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Solution

The fourth proportional to 356,656.35, 534,860.46 and 143,360.94 is: 214,991.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,656.35 : 534,860.46 = 143,360.94 : x
  2. Step 2: Convert to fraction form
    356,656.35/534,860.46 = 143,360.94/x
  3. Step 3: Cross multiply
    356,656.35x = 534,860.46 × 143,360.94
  4. Step 4: Simplify right side
    356,656.35x = 76,678,098,314.43
  5. Step 5: Solve for x
    x = 76,678,098,314.43/356,656.35
  6. Step 6: Final answer
    x = 214,991.54

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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.