Home / 290,814.05-401,319.47-163,489.61

Finding the Fourth Proportional to 290,814.05, 401,319.47 and 163,489.61

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Solution

The fourth proportional to 290,814.05, 401,319.47 and 163,489.61 is: 225,613.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,814.05 : 401,319.47 = 163,489.61 : x
  2. Step 2: Convert to fraction form
    290,814.05/401,319.47 = 163,489.61/x
  3. Step 3: Cross multiply
    290,814.05x = 401,319.47 × 163,489.61
  4. Step 4: Simplify right side
    290,814.05x = 65,611,560,811.66
  5. Step 5: Solve for x
    x = 65,611,560,811.66/290,814.05
  6. Step 6: Final answer
    x = 225,613.45

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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.