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Finding the Fourth Proportional to 356,367.51, 491,822.43 and 203,428.67

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Solution

The fourth proportional to 356,367.51, 491,822.43 and 203,428.67 is: 280,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,367.51 : 491,822.43 = 203,428.67 : x
  2. Step 2: Convert to fraction form
    356,367.51/491,822.43 = 203,428.67/x
  3. Step 3: Cross multiply
    356,367.51x = 491,822.43 × 203,428.67
  4. Step 4: Simplify right side
    356,367.51x = 100,050,784,436.37
  5. Step 5: Solve for x
    x = 100,050,784,436.37/356,367.51
  6. Step 6: Final answer
    x = 280,751.70

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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.