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Finding the Fourth Proportional to 353,512.80, 530,270.32 and 87,273.34

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Solution

The fourth proportional to 353,512.80, 530,270.32 and 87,273.34 is: 130,910.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,512.80 : 530,270.32 = 87,273.34 : x
  2. Step 2: Convert to fraction form
    353,512.80/530,270.32 = 87,273.34/x
  3. Step 3: Cross multiply
    353,512.80x = 530,270.32 × 87,273.34
  4. Step 4: Simplify right side
    353,512.80x = 46,278,461,929.27
  5. Step 5: Solve for x
    x = 46,278,461,929.27/353,512.80
  6. Step 6: Final answer
    x = 130,910.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.