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Finding the Fourth Proportional to 275,349.36, 379,968.60 and 156,094.32

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Solution

The fourth proportional to 275,349.36, 379,968.60 and 156,094.32 is: 215,402.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,349.36 : 379,968.60 = 156,094.32 : x
  2. Step 2: Convert to fraction form
    275,349.36/379,968.60 = 156,094.32/x
  3. Step 3: Cross multiply
    275,349.36x = 379,968.60 × 156,094.32
  4. Step 4: Simplify right side
    275,349.36x = 59,310,940,238.35
  5. Step 5: Solve for x
    x = 59,310,940,238.35/275,349.36
  6. Step 6: Final answer
    x = 215,402.50

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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.