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Finding the Fourth Proportional to 210,028.76, 289,846.96 and 119,388.52

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Solution

The fourth proportional to 210,028.76, 289,846.96 and 119,388.52 is: 164,760.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,028.76 : 289,846.96 = 119,388.52 : x
  2. Step 2: Convert to fraction form
    210,028.76/289,846.96 = 119,388.52/x
  3. Step 3: Cross multiply
    210,028.76x = 289,846.96 × 119,388.52
  4. Step 4: Simplify right side
    210,028.76x = 34,604,399,580.90
  5. Step 5: Solve for x
    x = 34,604,399,580.90/210,028.76
  6. Step 6: Final answer
    x = 164,760.29

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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.