Home / 209,083.20-313,624.80-51,309.60

Finding the Fourth Proportional to 209,083.20, 313,624.80 and 51,309.60

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Solution

The fourth proportional to 209,083.20, 313,624.80 and 51,309.60 is: 76,964.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,083.20 : 313,624.80 = 51,309.60 : x
  2. Step 2: Convert to fraction form
    209,083.20/313,624.80 = 51,309.60/x
  3. Step 3: Cross multiply
    209,083.20x = 313,624.80 × 51,309.60
  4. Step 4: Simplify right side
    209,083.20x = 16,091,963,038.08
  5. Step 5: Solve for x
    x = 16,091,963,038.08/209,083.20
  6. Step 6: Final answer
    x = 76,964.40

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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.