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Finding the Fourth Proportional to 250,466.68, 345,640.26 and 137,289.64

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Solution

The fourth proportional to 250,466.68, 345,640.26 and 137,289.64 is: 189,457.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,466.68 : 345,640.26 = 137,289.64 : x
  2. Step 2: Convert to fraction form
    250,466.68/345,640.26 = 137,289.64/x
  3. Step 3: Cross multiply
    250,466.68x = 345,640.26 × 137,289.64
  4. Step 4: Simplify right side
    250,466.68x = 47,452,826,864.91
  5. Step 5: Solve for x
    x = 47,452,826,864.91/250,466.68
  6. Step 6: Final answer
    x = 189,457.64

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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.