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Finding the Fourth Proportional to 212,628.99, 319,141.13 and 107,523.39

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Solution

The fourth proportional to 212,628.99, 319,141.13 and 107,523.39 is: 161,385.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,628.99 : 319,141.13 = 107,523.39 : x
  2. Step 2: Convert to fraction form
    212,628.99/319,141.13 = 107,523.39/x
  3. Step 3: Cross multiply
    212,628.99x = 319,141.13 × 107,523.39
  4. Step 4: Simplify right side
    212,628.99x = 34,315,135,648.41
  5. Step 5: Solve for x
    x = 34,315,135,648.41/212,628.99
  6. Step 6: Final answer
    x = 161,385.03

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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.