Home / 421,815.49-632,870.87-122,314.03

Finding the Fourth Proportional to 421,815.49, 632,870.87 and 122,314.03

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Solution

The fourth proportional to 421,815.49, 632,870.87 and 122,314.03 is: 183,513.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,815.49 : 632,870.87 = 122,314.03 : x
  2. Step 2: Convert to fraction form
    421,815.49/632,870.87 = 122,314.03/x
  3. Step 3: Cross multiply
    421,815.49x = 632,870.87 × 122,314.03
  4. Step 4: Simplify right side
    421,815.49x = 77,408,986,579.31
  5. Step 5: Solve for x
    x = 77,408,986,579.31/421,815.49
  6. Step 6: Final answer
    x = 183,513.85

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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.