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Finding the Fourth Proportional to 351,303.81, 484,747.11 and 213,411.03

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Solution

The fourth proportional to 351,303.81, 484,747.11 and 213,411.03 is: 294,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,303.81 : 484,747.11 = 213,411.03 : x
  2. Step 2: Convert to fraction form
    351,303.81/484,747.11 = 213,411.03/x
  3. Step 3: Cross multiply
    351,303.81x = 484,747.11 × 213,411.03
  4. Step 4: Simplify right side
    351,303.81x = 103,450,380,034.62
  5. Step 5: Solve for x
    x = 103,450,380,034.62/351,303.81
  6. Step 6: Final answer
    x = 294,475.54

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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.