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Finding the Fourth Proportional to 305,436.13, 421,552.43 and 169,513.74

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Solution

The fourth proportional to 305,436.13, 421,552.43 and 169,513.74 is: 233,957.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,436.13 : 421,552.43 = 169,513.74 : x
  2. Step 2: Convert to fraction form
    305,436.13/421,552.43 = 169,513.74/x
  3. Step 3: Cross multiply
    305,436.13x = 421,552.43 × 169,513.74
  4. Step 4: Simplify right side
    305,436.13x = 71,458,929,015.39
  5. Step 5: Solve for x
    x = 71,458,929,015.39/305,436.13
  6. Step 6: Final answer
    x = 233,957.03

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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.