Home / 423,039.90-634,139.37-212,033.82

Finding the Fourth Proportional to 423,039.90, 634,139.37 and 212,033.82

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Solution

The fourth proportional to 423,039.90, 634,139.37 and 212,033.82 is: 317,839.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,039.90 : 634,139.37 = 212,033.82 : x
  2. Step 2: Convert to fraction form
    423,039.90/634,139.37 = 212,033.82/x
  3. Step 3: Cross multiply
    423,039.90x = 634,139.37 × 212,033.82
  4. Step 4: Simplify right side
    423,039.90x = 134,458,993,033.49
  5. Step 5: Solve for x
    x = 134,458,993,033.49/423,039.90
  6. Step 6: Final answer
    x = 317,839.98

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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.