Home / 209,447.17-311,801.67-208,201.60

Finding the Fourth Proportional to 209,447.17, 311,801.67 and 208,201.60

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Solution

The fourth proportional to 209,447.17, 311,801.67 and 208,201.60 is: 309,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,447.17 : 311,801.67 = 208,201.60 : x
  2. Step 2: Convert to fraction form
    209,447.17/311,801.67 = 208,201.60/x
  3. Step 3: Cross multiply
    209,447.17x = 311,801.67 × 208,201.60
  4. Step 4: Simplify right side
    209,447.17x = 64,917,606,576.67
  5. Step 5: Solve for x
    x = 64,917,606,576.67/209,447.17
  6. Step 6: Final answer
    x = 309,947.40

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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.