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Finding the Fourth Proportional to 305,089.96, 421,004.10 and 170,928.04

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Solution

The fourth proportional to 305,089.96, 421,004.10 and 170,928.04 is: 235,869.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,089.96 : 421,004.10 = 170,928.04 : x
  2. Step 2: Convert to fraction form
    305,089.96/421,004.10 = 170,928.04/x
  3. Step 3: Cross multiply
    305,089.96x = 421,004.10 × 170,928.04
  4. Step 4: Simplify right side
    305,089.96x = 71,961,405,644.96
  5. Step 5: Solve for x
    x = 71,961,405,644.96/305,089.96
  6. Step 6: Final answer
    x = 235,869.47

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1.5x scale

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.