Home / 423,327.51-634,680.23-212,753.43

Finding the Fourth Proportional to 423,327.51, 634,680.23 and 212,753.43

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Solution

The fourth proportional to 423,327.51, 634,680.23 and 212,753.43 is: 318,973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,327.51 : 634,680.23 = 212,753.43 : x
  2. Step 2: Convert to fraction form
    423,327.51/634,680.23 = 212,753.43/x
  3. Step 3: Cross multiply
    423,327.51x = 634,680.23 × 212,753.43
  4. Step 4: Simplify right side
    423,327.51x = 135,030,394,821.92
  5. Step 5: Solve for x
    x = 135,030,394,821.92/423,327.51
  6. Step 6: Final answer
    x = 318,973.82

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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.