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Finding the Fourth Proportional to 281,909.94, 389,035.22 and 154,593.74

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Solution

The fourth proportional to 281,909.94, 389,035.22 and 154,593.74 is: 213,339.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,909.94 : 389,035.22 = 154,593.74 : x
  2. Step 2: Convert to fraction form
    281,909.94/389,035.22 = 154,593.74/x
  3. Step 3: Cross multiply
    281,909.94x = 389,035.22 × 154,593.74
  4. Step 4: Simplify right side
    281,909.94x = 60,142,406,933.38
  5. Step 5: Solve for x
    x = 60,142,406,933.38/281,909.94
  6. Step 6: Final answer
    x = 213,339.08

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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.