Home / 280,022.12-386,415.32-159,146.63

Finding the Fourth Proportional to 280,022.12, 386,415.32 and 159,146.63

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Solution

The fourth proportional to 280,022.12, 386,415.32 and 159,146.63 is: 219,613.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,022.12 : 386,415.32 = 159,146.63 : x
  2. Step 2: Convert to fraction form
    280,022.12/386,415.32 = 159,146.63/x
  3. Step 3: Cross multiply
    280,022.12x = 386,415.32 × 159,146.63
  4. Step 4: Simplify right side
    280,022.12x = 61,496,695,958.37
  5. Step 5: Solve for x
    x = 61,496,695,958.37/280,022.12
  6. Step 6: Final answer
    x = 219,613.71

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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.