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Finding the Fourth Proportional to 425,282.76, 637,982.46 and 125,786.88

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Solution

The fourth proportional to 425,282.76, 637,982.46 and 125,786.88 is: 188,697.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,282.76 : 637,982.46 = 125,786.88 : x
  2. Step 2: Convert to fraction form
    425,282.76/637,982.46 = 125,786.88/x
  3. Step 3: Cross multiply
    425,282.76x = 637,982.46 × 125,786.88
  4. Step 4: Simplify right side
    425,282.76x = 80,249,823,138.12
  5. Step 5: Solve for x
    x = 80,249,823,138.12/425,282.76
  6. Step 6: Final answer
    x = 188,697.57

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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.