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Finding the Fourth Proportional to 250,390.12, 345,537.81 and 135,671.89

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Solution

The fourth proportional to 250,390.12, 345,537.81 and 135,671.89 is: 187,226.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,390.12 : 345,537.81 = 135,671.89 : x
  2. Step 2: Convert to fraction form
    250,390.12/345,537.81 = 135,671.89/x
  3. Step 3: Cross multiply
    250,390.12x = 345,537.81 × 135,671.89
  4. Step 4: Simplify right side
    250,390.12x = 46,879,767,749.16
  5. Step 5: Solve for x
    x = 46,879,767,749.16/250,390.12
  6. Step 6: Final answer
    x = 187,226.91

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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.