Home / 423,323.51-634,674.23-212,749.43

Finding the Fourth Proportional to 423,323.51, 634,674.23 and 212,749.43

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Solution

The fourth proportional to 423,323.51, 634,674.23 and 212,749.43 is: 318,967.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,323.51 : 634,674.23 = 212,749.43 : x
  2. Step 2: Convert to fraction form
    423,323.51/634,674.23 = 212,749.43/x
  3. Step 3: Cross multiply
    423,323.51x = 634,674.23 × 212,749.43
  4. Step 4: Simplify right side
    423,323.51x = 135,026,579,604.44
  5. Step 5: Solve for x
    x = 135,026,579,604.44/423,323.51
  6. Step 6: Final answer
    x = 318,967.83

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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.