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Finding the Fourth Proportional to 274,507.88, 378,837.69 and 153,656.69

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Solution

The fourth proportional to 274,507.88, 378,837.69 and 153,656.69 is: 212,055.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,507.88 : 378,837.69 = 153,656.69 : x
  2. Step 2: Convert to fraction form
    274,507.88/378,837.69 = 153,656.69/x
  3. Step 3: Cross multiply
    274,507.88x = 378,837.69 × 153,656.69
  4. Step 4: Simplify right side
    274,507.88x = 58,210,945,492.65
  5. Step 5: Solve for x
    x = 58,210,945,492.65/274,507.88
  6. Step 6: Final answer
    x = 212,055.64

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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.