Home / 209,430.43-311,776.93-208,184.87

Finding the Fourth Proportional to 209,430.43, 311,776.93 and 208,184.87

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Solution

The fourth proportional to 209,430.43, 311,776.93 and 208,184.87 is: 309,922.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,430.43 : 311,776.93 = 208,184.87 : x
  2. Step 2: Convert to fraction form
    209,430.43/311,776.93 = 208,184.87/x
  3. Step 3: Cross multiply
    209,430.43x = 311,776.93 × 208,184.87
  4. Step 4: Simplify right side
    209,430.43x = 64,907,239,641.05
  5. Step 5: Solve for x
    x = 64,907,239,641.05/209,430.43
  6. Step 6: Final answer
    x = 309,922.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.