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Finding the Fourth Proportional to 273,911.25, 378,238 and 172,113.09

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Solution

The fourth proportional to 273,911.25, 378,238 and 172,113.09 is: 237,667.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,911.25 : 378,238 = 172,113.09 : x
  2. Step 2: Convert to fraction form
    273,911.25/378,238 = 172,113.09/x
  3. Step 3: Cross multiply
    273,911.25x = 378,238 × 172,113.09
  4. Step 4: Simplify right side
    273,911.25x = 65,099,710,935.42
  5. Step 5: Solve for x
    x = 65,099,710,935.42/273,911.25
  6. Step 6: Final answer
    x = 237,667.17

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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.