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Finding the Fourth Proportional to 305,342.76, 421,379.76 and 169,372.27

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Solution

The fourth proportional to 305,342.76, 421,379.76 and 169,372.27 is: 233,737.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,342.76 : 421,379.76 = 169,372.27 : x
  2. Step 2: Convert to fraction form
    305,342.76/421,379.76 = 169,372.27/x
  3. Step 3: Cross multiply
    305,342.76x = 421,379.76 × 169,372.27
  4. Step 4: Simplify right side
    305,342.76x = 71,370,046,483.26
  5. Step 5: Solve for x
    x = 71,370,046,483.26/305,342.76
  6. Step 6: Final answer
    x = 233,737.48

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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.