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Finding the Fourth Proportional to 391,425, 587,137.50 and 95,937

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Solution

The fourth proportional to 391,425, 587,137.50 and 95,937 is: 143,905.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,425 : 587,137.50 = 95,937 : x
  2. Step 2: Convert to fraction form
    391,425/587,137.50 = 95,937/x
  3. Step 3: Cross multiply
    391,425x = 587,137.50 × 95,937
  4. Step 4: Simplify right side
    391,425x = 56,328,210,337.50
  5. Step 5: Solve for x
    x = 56,328,210,337.50/391,425
  6. Step 6: Final answer
    x = 143,905.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.