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Finding the Fourth Proportional to 229,446, 316,635.48 and 128,844

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Solution

The fourth proportional to 229,446, 316,635.48 and 128,844 is: 177,804.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,446 : 316,635.48 = 128,844 : x
  2. Step 2: Convert to fraction form
    229,446/316,635.48 = 128,844/x
  3. Step 3: Cross multiply
    229,446x = 316,635.48 × 128,844
  4. Step 4: Simplify right side
    229,446x = 40,796,581,785.12
  5. Step 5: Solve for x
    x = 40,796,581,785.12/229,446
  6. Step 6: Final answer
    x = 177,804.72

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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.