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Finding the Fourth Proportional to 272,020.80, 407,632.80 and 243,940.80

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Solution

The fourth proportional to 272,020.80, 407,632.80 and 243,940.80 is: 365,553.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,020.80 : 407,632.80 = 243,940.80 : x
  2. Step 2: Convert to fraction form
    272,020.80/407,632.80 = 243,940.80/x
  3. Step 3: Cross multiply
    272,020.80x = 407,632.80 × 243,940.80
  4. Step 4: Simplify right side
    272,020.80x = 99,438,271,338.24
  5. Step 5: Solve for x
    x = 99,438,271,338.24/272,020.80
  6. Step 6: Final answer
    x = 365,553.93

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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.