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Finding the Fourth Proportional to 235,434.70, 324,913.17 and 128,002.43

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Solution

The fourth proportional to 235,434.70, 324,913.17 and 128,002.43 is: 176,650.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,434.70 : 324,913.17 = 128,002.43 : x
  2. Step 2: Convert to fraction form
    235,434.70/324,913.17 = 128,002.43/x
  3. Step 3: Cross multiply
    235,434.70x = 324,913.17 × 128,002.43
  4. Step 4: Simplify right side
    235,434.70x = 41,589,674,763.66
  5. Step 5: Solve for x
    x = 41,589,674,763.66/235,434.70
  6. Step 6: Final answer
    x = 176,650.57

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