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Finding the Fourth Proportional to 305,152.52, 421,135.40 and 169,229.12

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Solution

The fourth proportional to 305,152.52, 421,135.40 and 169,229.12 is: 233,550.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,152.52 : 421,135.40 = 169,229.12 : x
  2. Step 2: Convert to fraction form
    305,152.52/421,135.40 = 169,229.12/x
  3. Step 3: Cross multiply
    305,152.52x = 421,135.40 × 169,229.12
  4. Step 4: Simplify right side
    305,152.52x = 71,268,371,460.24
  5. Step 5: Solve for x
    x = 71,268,371,460.24/305,152.52
  6. Step 6: Final answer
    x = 233,550.01

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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.