Home / 209,056.80-313,585.20-207,890.40

Finding the Fourth Proportional to 209,056.80, 313,585.20 and 207,890.40

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Solution

The fourth proportional to 209,056.80, 313,585.20 and 207,890.40 is: 311,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,056.80 : 313,585.20 = 207,890.40 : x
  2. Step 2: Convert to fraction form
    209,056.80/313,585.20 = 207,890.40/x
  3. Step 3: Cross multiply
    209,056.80x = 313,585.20 × 207,890.40
  4. Step 4: Simplify right side
    209,056.80x = 65,191,352,662.08
  5. Step 5: Solve for x
    x = 65,191,352,662.08/209,056.80
  6. Step 6: Final answer
    x = 311,835.60

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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.