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Finding the Fourth Proportional to 216,018.70, 297,884.59 and 143,395.97

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Solution

The fourth proportional to 216,018.70, 297,884.59 and 143,395.97 is: 197,739.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,018.70 : 297,884.59 = 143,395.97 : x
  2. Step 2: Convert to fraction form
    216,018.70/297,884.59 = 143,395.97/x
  3. Step 3: Cross multiply
    216,018.70x = 297,884.59 × 143,395.97
  4. Step 4: Simplify right side
    216,018.70x = 42,715,449,558.79
  5. Step 5: Solve for x
    x = 42,715,449,558.79/216,018.70
  6. Step 6: Final answer
    x = 197,739.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.