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Finding the Fourth Proportional to 305,576.59, 421,689.34 and 169,602.56

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Solution

The fourth proportional to 305,576.59, 421,689.34 and 169,602.56 is: 234,048.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,576.59 : 421,689.34 = 169,602.56 : x
  2. Step 2: Convert to fraction form
    305,576.59/421,689.34 = 169,602.56/x
  3. Step 3: Cross multiply
    305,576.59x = 421,689.34 × 169,602.56
  4. Step 4: Simplify right side
    305,576.59x = 71,519,591,588.71
  5. Step 5: Solve for x
    x = 71,519,591,588.71/305,576.59
  6. Step 6: Final answer
    x = 234,048.01

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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.