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Finding the Fourth Proportional to 273,929.70, 378,015.72 and 153,071.98

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Solution

The fourth proportional to 273,929.70, 378,015.72 and 153,071.98 is: 211,235.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,929.70 : 378,015.72 = 153,071.98 : x
  2. Step 2: Convert to fraction form
    273,929.70/378,015.72 = 153,071.98/x
  3. Step 3: Cross multiply
    273,929.70x = 378,015.72 × 153,071.98
  4. Step 4: Simplify right side
    273,929.70x = 57,863,614,731.53
  5. Step 5: Solve for x
    x = 57,863,614,731.53/273,929.70
  6. Step 6: Final answer
    x = 211,235.27

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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.