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Finding the Fourth Proportional to 275,192.79, 379,765.39 and 152,703.78

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Solution

The fourth proportional to 275,192.79, 379,765.39 and 152,703.78 is: 210,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,192.79 : 379,765.39 = 152,703.78 : x
  2. Step 2: Convert to fraction form
    275,192.79/379,765.39 = 152,703.78/x
  3. Step 3: Cross multiply
    275,192.79x = 379,765.39 × 152,703.78
  4. Step 4: Simplify right side
    275,192.79x = 57,991,610,566.17
  5. Step 5: Solve for x
    x = 57,991,610,566.17/275,192.79
  6. Step 6: Final answer
    x = 210,730.85

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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.