Home / 309,141.27-426,677.13-211,285.80

Finding the Fourth Proportional to 309,141.27, 426,677.13 and 211,285.80

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Solution

The fourth proportional to 309,141.27, 426,677.13 and 211,285.80 is: 291,616.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,141.27 : 426,677.13 = 211,285.80 : x
  2. Step 2: Convert to fraction form
    309,141.27/426,677.13 = 211,285.80/x
  3. Step 3: Cross multiply
    309,141.27x = 426,677.13 × 211,285.80
  4. Step 4: Simplify right side
    309,141.27x = 90,150,818,753.75
  5. Step 5: Solve for x
    x = 90,150,818,753.75/309,141.27
  6. Step 6: Final answer
    x = 291,616.90

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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.