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Finding the Fourth Proportional to 643,554.62, 965,388.67 and 238,751.52

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Solution

The fourth proportional to 643,554.62, 965,388.67 and 238,751.52 is: 358,148.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,554.62 : 965,388.67 = 238,751.52 : x
  2. Step 2: Convert to fraction form
    643,554.62/965,388.67 = 238,751.52/x
  3. Step 3: Cross multiply
    643,554.62x = 965,388.67 × 238,751.52
  4. Step 4: Simplify right side
    643,554.62x = 230,488,012,353.28
  5. Step 5: Solve for x
    x = 230,488,012,353.28/643,554.62
  6. Step 6: Final answer
    x = 358,148.33

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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.