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Finding the Fourth Proportional to 283,297.43, 390,952.81 and 154,236.79

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Solution

The fourth proportional to 283,297.43, 390,952.81 and 154,236.79 is: 212,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,297.43 : 390,952.81 = 154,236.79 : x
  2. Step 2: Convert to fraction form
    283,297.43/390,952.81 = 154,236.79/x
  3. Step 3: Cross multiply
    283,297.43x = 390,952.81 × 154,236.79
  4. Step 4: Simplify right side
    283,297.43x = 60,299,307,137.37
  5. Step 5: Solve for x
    x = 60,299,307,137.37/283,297.43
  6. Step 6: Final answer
    x = 212,848.05

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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.