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Finding the Fourth Proportional to 353,338.90, 487,563.32 and 238,866.56

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Solution

The fourth proportional to 353,338.90, 487,563.32 and 238,866.56 is: 329,605.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,338.90 : 487,563.32 = 238,866.56 : x
  2. Step 2: Convert to fraction form
    353,338.90/487,563.32 = 238,866.56/x
  3. Step 3: Cross multiply
    353,338.90x = 487,563.32 × 238,866.56
  4. Step 4: Simplify right side
    353,338.90x = 116,462,573,030.58
  5. Step 5: Solve for x
    x = 116,462,573,030.58/353,338.90
  6. Step 6: Final answer
    x = 329,605.86

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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.