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Finding the Fourth Proportional to 311,208.48, 429,442.56 and 177,072.48

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Solution

The fourth proportional to 311,208.48, 429,442.56 and 177,072.48 is: 244,345.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,208.48 : 429,442.56 = 177,072.48 : x
  2. Step 2: Convert to fraction form
    311,208.48/429,442.56 = 177,072.48/x
  3. Step 3: Cross multiply
    311,208.48x = 429,442.56 × 177,072.48
  4. Step 4: Simplify right side
    311,208.48x = 76,042,459,116.75
  5. Step 5: Solve for x
    x = 76,042,459,116.75/311,208.48
  6. Step 6: Final answer
    x = 244,345.72

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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.