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Finding the Fourth Proportional to 219,649.56, 303,034.14 and 129,008.40

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Solution

The fourth proportional to 219,649.56, 303,034.14 and 129,008.40 is: 177,983.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,649.56 : 303,034.14 = 129,008.40 : x
  2. Step 2: Convert to fraction form
    219,649.56/303,034.14 = 129,008.40/x
  3. Step 3: Cross multiply
    219,649.56x = 303,034.14 × 129,008.40
  4. Step 4: Simplify right side
    219,649.56x = 39,093,949,546.78
  5. Step 5: Solve for x
    x = 39,093,949,546.78/219,649.56
  6. Step 6: Final answer
    x = 177,983.28

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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.