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Finding the Fourth Proportional to 316,576.80, 436,917.60 and 180,579.60

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Solution

The fourth proportional to 316,576.80, 436,917.60 and 180,579.60 is: 249,223.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,576.80 : 436,917.60 = 180,579.60 : x
  2. Step 2: Convert to fraction form
    316,576.80/436,917.60 = 180,579.60/x
  3. Step 3: Cross multiply
    316,576.80x = 436,917.60 × 180,579.60
  4. Step 4: Simplify right side
    316,576.80x = 78,898,405,440.96
  5. Step 5: Solve for x
    x = 78,898,405,440.96/316,576.80
  6. Step 6: Final answer
    x = 249,223.59

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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.