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Finding the Fourth Proportional to 354,879.72, 532,423.50 and 133,281

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Solution

The fourth proportional to 354,879.72, 532,423.50 and 133,281 is: 199,960.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,879.72 : 532,423.50 = 133,281 : x
  2. Step 2: Convert to fraction form
    354,879.72/532,423.50 = 133,281/x
  3. Step 3: Cross multiply
    354,879.72x = 532,423.50 × 133,281
  4. Step 4: Simplify right side
    354,879.72x = 70,961,936,503.50
  5. Step 5: Solve for x
    x = 70,961,936,503.50/354,879.72
  6. Step 6: Final answer
    x = 199,960.53

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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.