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Finding the Fourth Proportional to 329,958.38, 492,890.50 and 239,281.32

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Solution

The fourth proportional to 329,958.38, 492,890.50 and 239,281.32 is: 357,437.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,958.38 : 492,890.50 = 239,281.32 : x
  2. Step 2: Convert to fraction form
    329,958.38/492,890.50 = 239,281.32/x
  3. Step 3: Cross multiply
    329,958.38x = 492,890.50 × 239,281.32
  4. Step 4: Simplify right side
    329,958.38x = 117,939,489,455.46
  5. Step 5: Solve for x
    x = 117,939,489,455.46/329,958.38
  6. Step 6: Final answer
    x = 357,437.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.