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Finding the Fourth Proportional to 275,842.92, 380,663.55 and 154,984.13

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Solution

The fourth proportional to 275,842.92, 380,663.55 and 154,984.13 is: 213,878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,842.92 : 380,663.55 = 154,984.13 : x
  2. Step 2: Convert to fraction form
    275,842.92/380,663.55 = 154,984.13/x
  3. Step 3: Cross multiply
    275,842.92x = 380,663.55 × 154,984.13
  4. Step 4: Simplify right side
    275,842.92x = 58,996,810,784.86
  5. Step 5: Solve for x
    x = 58,996,810,784.86/275,842.92
  6. Step 6: Final answer
    x = 213,878.29

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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.