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Finding the Fourth Proportional to 268,071.30, 370,021.44 and 172,578

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Solution

The fourth proportional to 268,071.30, 370,021.44 and 172,578 is: 238,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,071.30 : 370,021.44 = 172,578 : x
  2. Step 2: Convert to fraction form
    268,071.30/370,021.44 = 172,578/x
  3. Step 3: Cross multiply
    268,071.30x = 370,021.44 × 172,578
  4. Step 4: Simplify right side
    268,071.30x = 63,857,560,072.32
  5. Step 5: Solve for x
    x = 63,857,560,072.32/268,071.30
  6. Step 6: Final answer
    x = 238,211.10

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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.