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Finding the Fourth Proportional to 315,694.89, 435,667.48 and 188,444.30

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Solution

The fourth proportional to 315,694.89, 435,667.48 and 188,444.30 is: 260,058.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,694.89 : 435,667.48 = 188,444.30 : x
  2. Step 2: Convert to fraction form
    315,694.89/435,667.48 = 188,444.30/x
  3. Step 3: Cross multiply
    315,694.89x = 435,667.48 × 188,444.30
  4. Step 4: Simplify right side
    315,694.89x = 82,099,050,651.92
  5. Step 5: Solve for x
    x = 82,099,050,651.92/315,694.89
  6. Step 6: Final answer
    x = 260,058.22

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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.