Home / 309,106.31-426,712.80-207,198.34

Finding the Fourth Proportional to 309,106.31, 426,712.80 and 207,198.34

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Solution

The fourth proportional to 309,106.31, 426,712.80 and 207,198.34 is: 286,031.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,106.31 : 426,712.80 = 207,198.34 : x
  2. Step 2: Convert to fraction form
    309,106.31/426,712.80 = 207,198.34/x
  3. Step 3: Cross multiply
    309,106.31x = 426,712.80 × 207,198.34
  4. Step 4: Simplify right side
    309,106.31x = 88,414,183,816.75
  5. Step 5: Solve for x
    x = 88,414,183,816.75/309,106.31
  6. Step 6: Final answer
    x = 286,031.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.