Home / 420,561.33-580,367.16-239,269.36

Finding the Fourth Proportional to 420,561.33, 580,367.16 and 239,269.36

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Solution

The fourth proportional to 420,561.33, 580,367.16 and 239,269.36 is: 330,187.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,561.33 : 580,367.16 = 239,269.36 : x
  2. Step 2: Convert to fraction form
    420,561.33/580,367.16 = 239,269.36/x
  3. Step 3: Cross multiply
    420,561.33x = 580,367.16 × 239,269.36
  4. Step 4: Simplify right side
    420,561.33x = 138,864,078,938.22
  5. Step 5: Solve for x
    x = 138,864,078,938.22/420,561.33
  6. Step 6: Final answer
    x = 330,187.46

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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.