Home / 415,929.60-623,804.31-131,643.26

Finding the Fourth Proportional to 415,929.60, 623,804.31 and 131,643.26

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Solution

The fourth proportional to 415,929.60, 623,804.31 and 131,643.26 is: 197,436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,929.60 : 623,804.31 = 131,643.26 : x
  2. Step 2: Convert to fraction form
    415,929.60/623,804.31 = 131,643.26/x
  3. Step 3: Cross multiply
    415,929.60x = 623,804.31 × 131,643.26
  4. Step 4: Simplify right side
    415,929.60x = 82,119,629,522.32
  5. Step 5: Solve for x
    x = 82,119,629,522.32/415,929.60
  6. Step 6: Final answer
    x = 197,436.37

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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.