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Finding the Fourth Proportional to 283,101.44, 390,668.27 and 154,040.45

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Solution

The fourth proportional to 283,101.44, 390,668.27 and 154,040.45 is: 212,569.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,101.44 : 390,668.27 = 154,040.45 : x
  2. Step 2: Convert to fraction form
    283,101.44/390,668.27 = 154,040.45/x
  3. Step 3: Cross multiply
    283,101.44x = 390,668.27 × 154,040.45
  4. Step 4: Simplify right side
    283,101.44x = 60,178,717,473.29
  5. Step 5: Solve for x
    x = 60,178,717,473.29/283,101.44
  6. Step 6: Final answer
    x = 212,569.45

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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.