Home / 209,191.74-311,573.08-208,172.22

Finding the Fourth Proportional to 209,191.74, 311,573.08 and 208,172.22

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Solution

The fourth proportional to 209,191.74, 311,573.08 and 208,172.22 is: 310,054.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,191.74 : 311,573.08 = 208,172.22 : x
  2. Step 2: Convert to fraction form
    209,191.74/311,573.08 = 208,172.22/x
  3. Step 3: Cross multiply
    209,191.74x = 311,573.08 × 208,172.22
  4. Step 4: Simplify right side
    209,191.74x = 64,860,858,714.98
  5. Step 5: Solve for x
    x = 64,860,858,714.98/209,191.74
  6. Step 6: Final answer
    x = 310,054.59

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1.5x scale

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.