Home / 423,317.21-634,951.09-309,580.22

Finding the Fourth Proportional to 423,317.21, 634,951.09 and 309,580.22

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Solution

The fourth proportional to 423,317.21, 634,951.09 and 309,580.22 is: 464,352.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,317.21 : 634,951.09 = 309,580.22 : x
  2. Step 2: Convert to fraction form
    423,317.21/634,951.09 = 309,580.22/x
  3. Step 3: Cross multiply
    423,317.21x = 634,951.09 × 309,580.22
  4. Step 4: Simplify right side
    423,317.21x = 196,568,300,105.79
  5. Step 5: Solve for x
    x = 196,568,300,105.79/423,317.21
  6. Step 6: Final answer
    x = 464,352.25

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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.