Home / 306,083.10-459,124.05-81,443.50

Finding the Fourth Proportional to 306,083.10, 459,124.05 and 81,443.50

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Solution

The fourth proportional to 306,083.10, 459,124.05 and 81,443.50 is: 122,165.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,083.10 : 459,124.05 = 81,443.50 : x
  2. Step 2: Convert to fraction form
    306,083.10/459,124.05 = 81,443.50/x
  3. Step 3: Cross multiply
    306,083.10x = 459,124.05 × 81,443.50
  4. Step 4: Simplify right side
    306,083.10x = 37,392,669,556.94
  5. Step 5: Solve for x
    x = 37,392,669,556.94/306,083.10
  6. Step 6: Final answer
    x = 122,165.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.