Home / 420,931.78-580,878.56-229,940.26

Finding the Fourth Proportional to 420,931.78, 580,878.56 and 229,940.26

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Solution

The fourth proportional to 420,931.78, 580,878.56 and 229,940.26 is: 317,313.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,931.78 : 580,878.56 = 229,940.26 : x
  2. Step 2: Convert to fraction form
    420,931.78/580,878.56 = 229,940.26/x
  3. Step 3: Cross multiply
    420,931.78x = 580,878.56 × 229,940.26
  4. Step 4: Simplify right side
    420,931.78x = 133,567,367,114.83
  5. Step 5: Solve for x
    x = 133,567,367,114.83/420,931.78
  6. Step 6: Final answer
    x = 317,313.57

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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.