Home / 420,409.10-580,177.37-239,147.30

Finding the Fourth Proportional to 420,409.10, 580,177.37 and 239,147.30

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Solution

The fourth proportional to 420,409.10, 580,177.37 and 239,147.30 is: 330,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,409.10 : 580,177.37 = 239,147.30 : x
  2. Step 2: Convert to fraction form
    420,409.10/580,177.37 = 239,147.30/x
  3. Step 3: Cross multiply
    420,409.10x = 580,177.37 × 239,147.30
  4. Step 4: Simplify right side
    420,409.10x = 138,747,851,556.60
  5. Step 5: Solve for x
    x = 138,747,851,556.60/420,409.10
  6. Step 6: Final answer
    x = 330,030.56

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1.5x scale

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.