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Finding the Fourth Proportional to 238,354.58, 328,920.49 and 130,918.21

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Solution

The fourth proportional to 238,354.58, 328,920.49 and 130,918.21 is: 180,662.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,354.58 : 328,920.49 = 130,918.21 : x
  2. Step 2: Convert to fraction form
    238,354.58/328,920.49 = 130,918.21/x
  3. Step 3: Cross multiply
    238,354.58x = 328,920.49 × 130,918.21
  4. Step 4: Simplify right side
    238,354.58x = 43,061,680,633.53
  5. Step 5: Solve for x
    x = 43,061,680,633.53/238,354.58
  6. Step 6: Final answer
    x = 180,662.27

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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.