Home / 415,087.20-622,225.80-212,683.32

Finding the Fourth Proportional to 415,087.20, 622,225.80 and 212,683.32

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Solution

The fourth proportional to 415,087.20, 622,225.80 and 212,683.32 is: 318,817.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,087.20 : 622,225.80 = 212,683.32 : x
  2. Step 2: Convert to fraction form
    415,087.20/622,225.80 = 212,683.32/x
  3. Step 3: Cross multiply
    415,087.20x = 622,225.80 × 212,683.32
  4. Step 4: Simplify right side
    415,087.20x = 132,337,048,933.66
  5. Step 5: Solve for x
    x = 132,337,048,933.66/415,087.20
  6. Step 6: Final answer
    x = 318,817.47

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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.