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Finding the Fourth Proportional to 305,576.84, 421,689.68 and 169,602.82

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Solution

The fourth proportional to 305,576.84, 421,689.68 and 169,602.82 is: 234,048.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,576.84 : 421,689.68 = 169,602.82 : x
  2. Step 2: Convert to fraction form
    305,576.84/421,689.68 = 169,602.82/x
  3. Step 3: Cross multiply
    305,576.84x = 421,689.68 × 169,602.82
  4. Step 4: Simplify right side
    305,576.84x = 71,519,758,892.90
  5. Step 5: Solve for x
    x = 71,519,758,892.90/305,576.84
  6. Step 6: Final answer
    x = 234,048.36

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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.