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Finding the Fourth Proportional to 356,645.85, 534,844.71 and 143,350.44

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Solution

The fourth proportional to 356,645.85, 534,844.71 and 143,350.44 is: 214,975.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,645.85 : 534,844.71 = 143,350.44 : x
  2. Step 2: Convert to fraction form
    356,645.85/534,844.71 = 143,350.44/x
  3. Step 3: Cross multiply
    356,645.85x = 534,844.71 × 143,350.44
  4. Step 4: Simplify right side
    356,645.85x = 76,670,224,510.17
  5. Step 5: Solve for x
    x = 76,670,224,510.17/356,645.85
  6. Step 6: Final answer
    x = 214,975.79

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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.