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Finding the Fourth Proportional to 305,563.68, 421,703.28 and 169,610.40

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Solution

The fourth proportional to 305,563.68, 421,703.28 and 169,610.40 is: 234,076.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,563.68 : 421,703.28 = 169,610.40 : x
  2. Step 2: Convert to fraction form
    305,563.68/421,703.28 = 169,610.40/x
  3. Step 3: Cross multiply
    305,563.68x = 421,703.28 × 169,610.40
  4. Step 4: Simplify right side
    305,563.68x = 71,525,262,002.11
  5. Step 5: Solve for x
    x = 71,525,262,002.11/305,563.68
  6. Step 6: Final answer
    x = 234,076.45

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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.