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Finding the Fourth Proportional to 216,019.70, 297,885.97 and 143,396.97

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Solution

The fourth proportional to 216,019.70, 297,885.97 and 143,396.97 is: 197,740.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,019.70 : 297,885.97 = 143,396.97 : x
  2. Step 2: Convert to fraction form
    216,019.70/297,885.97 = 143,396.97/x
  3. Step 3: Cross multiply
    216,019.70x = 297,885.97 × 143,396.97
  4. Step 4: Simplify right side
    216,019.70x = 42,715,945,503.51
  5. Step 5: Solve for x
    x = 42,715,945,503.51/216,019.70
  6. Step 6: Final answer
    x = 197,740.97

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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.