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Finding the Fourth Proportional to 250,467.68, 345,641.64 and 137,290.64

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Solution

The fourth proportional to 250,467.68, 345,641.64 and 137,290.64 is: 189,459.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,467.68 : 345,641.64 = 137,290.64 : x
  2. Step 2: Convert to fraction form
    250,467.68/345,641.64 = 137,290.64/x
  3. Step 3: Cross multiply
    250,467.68x = 345,641.64 × 137,290.64
  4. Step 4: Simplify right side
    250,467.68x = 47,453,361,966.25
  5. Step 5: Solve for x
    x = 47,453,361,966.25/250,467.68
  6. Step 6: Final answer
    x = 189,459.02

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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.