Home / 428,182.08-590,202.60-290,316.36

Finding the Fourth Proportional to 428,182.08, 590,202.60 and 290,316.36

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Solution

The fourth proportional to 428,182.08, 590,202.60 and 290,316.36 is: 400,169.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,182.08 : 590,202.60 = 290,316.36 : x
  2. Step 2: Convert to fraction form
    428,182.08/590,202.60 = 290,316.36/x
  3. Step 3: Cross multiply
    428,182.08x = 590,202.60 × 290,316.36
  4. Step 4: Simplify right side
    428,182.08x = 171,345,470,494.54
  5. Step 5: Solve for x
    x = 171,345,470,494.54/428,182.08
  6. Step 6: Final answer
    x = 400,169.64

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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.