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Finding the Fourth Proportional to 296,427.78, 444,322.80 and 128,027.30

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Solution

The fourth proportional to 296,427.78, 444,322.80 and 128,027.30 is: 191,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,427.78 : 444,322.80 = 128,027.30 : x
  2. Step 2: Convert to fraction form
    296,427.78/444,322.80 = 128,027.30/x
  3. Step 3: Cross multiply
    296,427.78x = 444,322.80 × 128,027.30
  4. Step 4: Simplify right side
    296,427.78x = 56,885,446,190.83
  5. Step 5: Solve for x
    x = 56,885,446,190.83/296,427.78
  6. Step 6: Final answer
    x = 191,903.22

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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.