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Finding the Fourth Proportional to 312,068.58, 430,665.69 and 176,094.60

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Solution

The fourth proportional to 312,068.58, 430,665.69 and 176,094.60 is: 243,016.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,068.58 : 430,665.69 = 176,094.60 : x
  2. Step 2: Convert to fraction form
    312,068.58/430,665.69 = 176,094.60/x
  3. Step 3: Cross multiply
    312,068.58x = 430,665.69 × 176,094.60
  4. Step 4: Simplify right side
    312,068.58x = 75,837,902,414.27
  5. Step 5: Solve for x
    x = 75,837,902,414.27/312,068.58
  6. Step 6: Final answer
    x = 243,016.78

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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.