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Finding the Fourth Proportional to 352,958.54, 529,140.40 and 153,128.57

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Solution

The fourth proportional to 352,958.54, 529,140.40 and 153,128.57 is: 229,563.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,958.54 : 529,140.40 = 153,128.57 : x
  2. Step 2: Convert to fraction form
    352,958.54/529,140.40 = 153,128.57/x
  3. Step 3: Cross multiply
    352,958.54x = 529,140.40 × 153,128.57
  4. Step 4: Simplify right side
    352,958.54x = 81,026,512,781.23
  5. Step 5: Solve for x
    x = 81,026,512,781.23/352,958.54
  6. Step 6: Final answer
    x = 229,563.83

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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.