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Finding the Fourth Proportional to 281,130.56, 388,010.12 and 166,472.85

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Solution

The fourth proportional to 281,130.56, 388,010.12 and 166,472.85 is: 229,762.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,130.56 : 388,010.12 = 166,472.85 : x
  2. Step 2: Convert to fraction form
    281,130.56/388,010.12 = 166,472.85/x
  3. Step 3: Cross multiply
    281,130.56x = 388,010.12 × 166,472.85
  4. Step 4: Simplify right side
    281,130.56x = 64,593,151,127.92
  5. Step 5: Solve for x
    x = 64,593,151,127.92/281,130.56
  6. Step 6: Final answer
    x = 229,762.11

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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.