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Finding the Fourth Proportional to 316,046.56, 436,128.96 and 180,112.36

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Solution

The fourth proportional to 316,046.56, 436,128.96 and 180,112.36 is: 248,546.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,046.56 : 436,128.96 = 180,112.36 : x
  2. Step 2: Convert to fraction form
    316,046.56/436,128.96 = 180,112.36/x
  3. Step 3: Cross multiply
    316,046.56x = 436,128.96 × 180,112.36
  4. Step 4: Simplify right side
    316,046.56x = 78,552,216,249.95
  5. Step 5: Solve for x
    x = 78,552,216,249.95/316,046.56
  6. Step 6: Final answer
    x = 248,546.34

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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.