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Finding the Fourth Proportional to 250,464.40, 345,640.04 and 135,746.40

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Solution

The fourth proportional to 250,464.40, 345,640.04 and 135,746.40 is: 187,329.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,464.40 : 345,640.04 = 135,746.40 : x
  2. Step 2: Convert to fraction form
    250,464.40/345,640.04 = 135,746.40/x
  3. Step 3: Cross multiply
    250,464.40x = 345,640.04 × 135,746.40
  4. Step 4: Simplify right side
    250,464.40x = 46,919,391,125.86
  5. Step 5: Solve for x
    x = 46,919,391,125.86/250,464.40
  6. Step 6: Final answer
    x = 187,329.58

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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.