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Finding the Fourth Proportional to 304,988.76, 420,872.40 and 169,028.46

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Solution

The fourth proportional to 304,988.76, 420,872.40 and 169,028.46 is: 233,252.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,988.76 : 420,872.40 = 169,028.46 : x
  2. Step 2: Convert to fraction form
    304,988.76/420,872.40 = 169,028.46/x
  3. Step 3: Cross multiply
    304,988.76x = 420,872.40 × 169,028.46
  4. Step 4: Simplify right side
    304,988.76x = 71,139,413,628.50
  5. Step 5: Solve for x
    x = 71,139,413,628.50/304,988.76
  6. Step 6: Final answer
    x = 233,252.58

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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.