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Finding the Fourth Proportional to 228,996.36, 316,007.28 and 127,021.32

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Solution

The fourth proportional to 228,996.36, 316,007.28 and 127,021.32 is: 175,285.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,996.36 : 316,007.28 = 127,021.32 : x
  2. Step 2: Convert to fraction form
    228,996.36/316,007.28 = 127,021.32/x
  3. Step 3: Cross multiply
    228,996.36x = 316,007.28 × 127,021.32
  4. Step 4: Simplify right side
    228,996.36x = 40,139,661,835.21
  5. Step 5: Solve for x
    x = 40,139,661,835.21/228,996.36
  6. Step 6: Final answer
    x = 175,285.15

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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.