Home / 412,928.70-618,615.45-212,567.10

Finding the Fourth Proportional to 412,928.70, 618,615.45 and 212,567.10

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Solution

The fourth proportional to 412,928.70, 618,615.45 and 212,567.10 is: 318,450.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,928.70 : 618,615.45 = 212,567.10 : x
  2. Step 2: Convert to fraction form
    412,928.70/618,615.45 = 212,567.10/x
  3. Step 3: Cross multiply
    412,928.70x = 618,615.45 × 212,567.10
  4. Step 4: Simplify right side
    412,928.70x = 131,497,292,221.70
  5. Step 5: Solve for x
    x = 131,497,292,221.70/412,928.70
  6. Step 6: Final answer
    x = 318,450.36

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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.