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Finding the Fourth Proportional to 248,663.80, 372,995.70 and 214,838.20

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Solution

The fourth proportional to 248,663.80, 372,995.70 and 214,838.20 is: 322,257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,663.80 : 372,995.70 = 214,838.20 : x
  2. Step 2: Convert to fraction form
    248,663.80/372,995.70 = 214,838.20/x
  3. Step 3: Cross multiply
    248,663.80x = 372,995.70 × 214,838.20
  4. Step 4: Simplify right side
    248,663.80x = 80,133,724,795.74
  5. Step 5: Solve for x
    x = 80,133,724,795.74/248,663.80
  6. Step 6: Final answer
    x = 322,257.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.