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Finding the Fourth Proportional to 281,851.34, 388,958.64 and 154,526.63

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Solution

The fourth proportional to 281,851.34, 388,958.64 and 154,526.63 is: 213,248.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,851.34 : 388,958.64 = 154,526.63 : x
  2. Step 2: Convert to fraction form
    281,851.34/388,958.64 = 154,526.63/x
  3. Step 3: Cross multiply
    281,851.34x = 388,958.64 × 154,526.63
  4. Step 4: Simplify right side
    281,851.34x = 60,104,467,848.58
  5. Step 5: Solve for x
    x = 60,104,467,848.58/281,851.34
  6. Step 6: Final answer
    x = 213,248.83

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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.