Home / 420,336.36-580,076.96-239,074.38

Finding the Fourth Proportional to 420,336.36, 580,076.96 and 239,074.38

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Solution

The fourth proportional to 420,336.36, 580,076.96 and 239,074.38 is: 329,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,336.36 : 580,076.96 = 239,074.38 : x
  2. Step 2: Convert to fraction form
    420,336.36/580,076.96 = 239,074.38/x
  3. Step 3: Cross multiply
    420,336.36x = 580,076.96 × 239,074.38
  4. Step 4: Simplify right side
    420,336.36x = 138,681,539,564.29
  5. Step 5: Solve for x
    x = 138,681,539,564.29/420,336.36
  6. Step 6: Final answer
    x = 329,929.92

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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.