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Finding the Fourth Proportional to 268,072.80, 370,023.51 and 172,579.50

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Solution

The fourth proportional to 268,072.80, 370,023.51 and 172,579.50 is: 238,213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,072.80 : 370,023.51 = 172,579.50 : x
  2. Step 2: Convert to fraction form
    268,072.80/370,023.51 = 172,579.50/x
  3. Step 3: Cross multiply
    268,072.80x = 370,023.51 × 172,579.50
  4. Step 4: Simplify right side
    268,072.80x = 63,858,472,344.05
  5. Step 5: Solve for x
    x = 63,858,472,344.05/268,072.80
  6. Step 6: Final answer
    x = 238,213.17

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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.