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Finding the Fourth Proportional to 274,465.76, 378,779.44 and 153,604.58

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Solution

The fourth proportional to 274,465.76, 378,779.44 and 153,604.58 is: 211,983.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,465.76 : 378,779.44 = 153,604.58 : x
  2. Step 2: Convert to fraction form
    274,465.76/378,779.44 = 153,604.58/x
  3. Step 3: Cross multiply
    274,465.76x = 378,779.44 × 153,604.58
  4. Step 4: Simplify right side
    274,465.76x = 58,182,256,793.84
  5. Step 5: Solve for x
    x = 58,182,256,793.84/274,465.76
  6. Step 6: Final answer
    x = 211,983.66

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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.