Home / 401,738.51-602,642.79-131,785.71

Finding the Fourth Proportional to 401,738.51, 602,642.79 and 131,785.71

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Solution

The fourth proportional to 401,738.51, 602,642.79 and 131,785.71 is: 197,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,738.51 : 602,642.79 = 131,785.71 : x
  2. Step 2: Convert to fraction form
    401,738.51/602,642.79 = 131,785.71/x
  3. Step 3: Cross multiply
    401,738.51x = 602,642.79 × 131,785.71
  4. Step 4: Simplify right side
    401,738.51x = 79,419,704,284.39
  5. Step 5: Solve for x
    x = 79,419,704,284.39/401,738.51
  6. Step 6: Final answer
    x = 197,690.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.