Home / 445,466.20-668,352.30-129,969.40

Finding the Fourth Proportional to 445,466.20, 668,352.30 and 129,969.40

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Solution

The fourth proportional to 445,466.20, 668,352.30 and 129,969.40 is: 194,998.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,466.20 : 668,352.30 = 129,969.40 : x
  2. Step 2: Convert to fraction form
    445,466.20/668,352.30 = 129,969.40/x
  3. Step 3: Cross multiply
    445,466.20x = 668,352.30 × 129,969.40
  4. Step 4: Simplify right side
    445,466.20x = 86,865,347,419.62
  5. Step 5: Solve for x
    x = 86,865,347,419.62/445,466.20
  6. Step 6: Final answer
    x = 194,998.74

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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.