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Finding the Fourth Proportional to 273,915, 378,020.28 and 153,056.64

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Solution

The fourth proportional to 273,915, 378,020.28 and 153,056.64 is: 211,227.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,915 : 378,020.28 = 153,056.64 : x
  2. Step 2: Convert to fraction form
    273,915/378,020.28 = 153,056.64/x
  3. Step 3: Cross multiply
    273,915x = 378,020.28 × 153,056.64
  4. Step 4: Simplify right side
    273,915x = 57,858,513,908.66
  5. Step 5: Solve for x
    x = 57,858,513,908.66/273,915
  6. Step 6: Final answer
    x = 211,227.99

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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.