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Finding the Fourth Proportional to 308,190.46, 425,271.15 and 211,477.27

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Solution

The fourth proportional to 308,190.46, 425,271.15 and 211,477.27 is: 291,816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,190.46 : 425,271.15 = 211,477.27 : x
  2. Step 2: Convert to fraction form
    308,190.46/425,271.15 = 211,477.27/x
  3. Step 3: Cross multiply
    308,190.46x = 425,271.15 × 211,477.27
  4. Step 4: Simplify right side
    308,190.46x = 89,935,181,811.76
  5. Step 5: Solve for x
    x = 89,935,181,811.76/308,190.46
  6. Step 6: Final answer
    x = 291,816.89

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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.