Home / 415,946.31-623,963.21-135,485.43

Finding the Fourth Proportional to 415,946.31, 623,963.21 and 135,485.43

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Solution

The fourth proportional to 415,946.31, 623,963.21 and 135,485.43 is: 203,242.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,946.31 : 623,963.21 = 135,485.43 : x
  2. Step 2: Convert to fraction form
    415,946.31/623,963.21 = 135,485.43/x
  3. Step 3: Cross multiply
    415,946.31x = 623,963.21 × 135,485.43
  4. Step 4: Simplify right side
    415,946.31x = 84,537,923,133.60
  5. Step 5: Solve for x
    x = 84,537,923,133.60/415,946.31
  6. Step 6: Final answer
    x = 203,242.39

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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.