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Finding the Fourth Proportional to 243,958.70, 336,869.67 and 153,343.85

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Solution

The fourth proportional to 243,958.70, 336,869.67 and 153,343.85 is: 211,744.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,958.70 : 336,869.67 = 153,343.85 : x
  2. Step 2: Convert to fraction form
    243,958.70/336,869.67 = 153,343.85/x
  3. Step 3: Cross multiply
    243,958.70x = 336,869.67 × 153,343.85
  4. Step 4: Simplify right side
    243,958.70x = 51,656,889,694.96
  5. Step 5: Solve for x
    x = 51,656,889,694.96/243,958.70
  6. Step 6: Final answer
    x = 211,744.41

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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.