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Finding the Fourth Proportional to 490,092.40, 734,555.40 and 205,782.40

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Solution

The fourth proportional to 490,092.40, 734,555.40 and 205,782.40 is: 308,428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,092.40 : 734,555.40 = 205,782.40 : x
  2. Step 2: Convert to fraction form
    490,092.40/734,555.40 = 205,782.40/x
  3. Step 3: Cross multiply
    490,092.40x = 734,555.40 × 205,782.40
  4. Step 4: Simplify right side
    490,092.40x = 151,158,573,144.96
  5. Step 5: Solve for x
    x = 151,158,573,144.96/490,092.40
  6. Step 6: Final answer
    x = 308,428.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.