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Finding the Fourth Proportional to 238,871.82, 358,354.66 and 78,941.28

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Solution

The fourth proportional to 238,871.82, 358,354.66 and 78,941.28 is: 118,427.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,871.82 : 358,354.66 = 78,941.28 : x
  2. Step 2: Convert to fraction form
    238,871.82/358,354.66 = 78,941.28/x
  3. Step 3: Cross multiply
    238,871.82x = 358,354.66 × 78,941.28
  4. Step 4: Simplify right side
    238,871.82x = 28,288,975,554.36
  5. Step 5: Solve for x
    x = 28,288,975,554.36/238,871.82
  6. Step 6: Final answer
    x = 118,427.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.