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Finding the Fourth Proportional to 354,379.08, 489,040.02 and 203,477.16

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Solution

The fourth proportional to 354,379.08, 489,040.02 and 203,477.16 is: 280,796.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,379.08 : 489,040.02 = 203,477.16 : x
  2. Step 2: Convert to fraction form
    354,379.08/489,040.02 = 203,477.16/x
  3. Step 3: Cross multiply
    354,379.08x = 489,040.02 × 203,477.16
  4. Step 4: Simplify right side
    354,379.08x = 99,508,474,395.94
  5. Step 5: Solve for x
    x = 99,508,474,395.94/354,379.08
  6. Step 6: Final answer
    x = 280,796.69

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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.