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Finding the Fourth Proportional to 305,096.76, 421,033.52 and 169,130.36

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Solution

The fourth proportional to 305,096.76, 421,033.52 and 169,130.36 is: 233,399.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,096.76 : 421,033.52 = 169,130.36 : x
  2. Step 2: Convert to fraction form
    305,096.76/421,033.52 = 169,130.36/x
  3. Step 3: Cross multiply
    305,096.76x = 421,033.52 × 169,130.36
  4. Step 4: Simplify right side
    305,096.76x = 71,209,552,285.08
  5. Step 5: Solve for x
    x = 71,209,552,285.08/305,096.76
  6. Step 6: Final answer
    x = 233,399.90

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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.