Home / 305,538.64-420,147.77-265,182.12

Finding the Fourth Proportional to 305,538.64, 420,147.77 and 265,182.12

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Solution

The fourth proportional to 305,538.64, 420,147.77 and 265,182.12 is: 364,653.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,538.64 : 420,147.77 = 265,182.12 : x
  2. Step 2: Convert to fraction form
    305,538.64/420,147.77 = 265,182.12/x
  3. Step 3: Cross multiply
    305,538.64x = 420,147.77 × 265,182.12
  4. Step 4: Simplify right side
    305,538.64x = 111,415,675,035.96
  5. Step 5: Solve for x
    x = 111,415,675,035.96/305,538.64
  6. Step 6: Final answer
    x = 364,653.31

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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.