Home / 309,104.18-426,709.87-207,196.21

Finding the Fourth Proportional to 309,104.18, 426,709.87 and 207,196.21

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Solution

The fourth proportional to 309,104.18, 426,709.87 and 207,196.21 is: 286,028.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,104.18 : 426,709.87 = 207,196.21 : x
  2. Step 2: Convert to fraction form
    309,104.18/426,709.87 = 207,196.21/x
  3. Step 3: Cross multiply
    309,104.18x = 426,709.87 × 207,196.21
  4. Step 4: Simplify right side
    309,104.18x = 88,412,665,730.84
  5. Step 5: Solve for x
    x = 88,412,665,730.84/309,104.18
  6. Step 6: Final answer
    x = 286,028.69

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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.