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Finding the Fourth Proportional to 356,657.85, 534,862.71 and 143,362.44

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Solution

The fourth proportional to 356,657.85, 534,862.71 and 143,362.44 is: 214,993.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,657.85 : 534,862.71 = 143,362.44 : x
  2. Step 2: Convert to fraction form
    356,657.85/534,862.71 = 143,362.44/x
  3. Step 3: Cross multiply
    356,657.85x = 534,862.71 × 143,362.44
  4. Step 4: Simplify right side
    356,657.85x = 76,679,223,170.61
  5. Step 5: Solve for x
    x = 76,679,223,170.61/356,657.85
  6. Step 6: Final answer
    x = 214,993.79

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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.