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Finding the Fourth Proportional to 305,465.44, 421,522.05 and 169,490.77

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Solution

The fourth proportional to 305,465.44, 421,522.05 and 169,490.77 is: 233,886.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,465.44 : 421,522.05 = 169,490.77 : x
  2. Step 2: Convert to fraction form
    305,465.44/421,522.05 = 169,490.77/x
  3. Step 3: Cross multiply
    305,465.44x = 421,522.05 × 169,490.77
  4. Step 4: Simplify right side
    305,465.44x = 71,444,096,826.48
  5. Step 5: Solve for x
    x = 71,444,096,826.48/305,465.44
  6. Step 6: Final answer
    x = 233,886.02

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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.