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Finding the Fourth Proportional to 250,442.64, 345,611.88 and 137,267.28

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Solution

The fourth proportional to 250,442.64, 345,611.88 and 137,267.28 is: 189,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,442.64 : 345,611.88 = 137,267.28 : x
  2. Step 2: Convert to fraction form
    250,442.64/345,611.88 = 137,267.28/x
  3. Step 3: Cross multiply
    250,442.64x = 345,611.88 × 137,267.28
  4. Step 4: Simplify right side
    250,442.64x = 47,441,202,703.29
  5. Step 5: Solve for x
    x = 47,441,202,703.29/250,442.64
  6. Step 6: Final answer
    x = 189,429.41

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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.