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Finding the Fourth Proportional to 238,891.88, 329,653.80 and 142,090.40

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Solution

The fourth proportional to 238,891.88, 329,653.80 and 142,090.40 is: 196,074.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,891.88 : 329,653.80 = 142,090.40 : x
  2. Step 2: Convert to fraction form
    238,891.88/329,653.80 = 142,090.40/x
  3. Step 3: Cross multiply
    238,891.88x = 329,653.80 × 142,090.40
  4. Step 4: Simplify right side
    238,891.88x = 46,840,641,127.65
  5. Step 5: Solve for x
    x = 46,840,641,127.65/238,891.88
  6. Step 6: Final answer
    x = 196,074.65

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1.5x scale

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.