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Finding the Fourth Proportional to 305,310.48, 421,302.24 and 177,997.92

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Solution

The fourth proportional to 305,310.48, 421,302.24 and 177,997.92 is: 245,621.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,310.48 : 421,302.24 = 177,997.92 : x
  2. Step 2: Convert to fraction form
    305,310.48/421,302.24 = 177,997.92/x
  3. Step 3: Cross multiply
    305,310.48x = 421,302.24 × 177,997.92
  4. Step 4: Simplify right side
    305,310.48x = 74,990,922,411.34
  5. Step 5: Solve for x
    x = 74,990,922,411.34/305,310.48
  6. Step 6: Final answer
    x = 245,621.84

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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.