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Finding the Fourth Proportional to 250,698.88, 345,964.52 and 137,521.63

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Solution

The fourth proportional to 250,698.88, 345,964.52 and 137,521.63 is: 189,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,698.88 : 345,964.52 = 137,521.63 : x
  2. Step 2: Convert to fraction form
    250,698.88/345,964.52 = 137,521.63/x
  3. Step 3: Cross multiply
    250,698.88x = 345,964.52 × 137,521.63
  4. Step 4: Simplify right side
    250,698.88x = 47,577,602,295.14
  5. Step 5: Solve for x
    x = 47,577,602,295.14/250,698.88
  6. Step 6: Final answer
    x = 189,779.88

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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.