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Finding the Fourth Proportional to 354,890.70, 532,336.05 and 186,345.90

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Solution

The fourth proportional to 354,890.70, 532,336.05 and 186,345.90 is: 279,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,890.70 : 532,336.05 = 186,345.90 : x
  2. Step 2: Convert to fraction form
    354,890.70/532,336.05 = 186,345.90/x
  3. Step 3: Cross multiply
    354,890.70x = 532,336.05 × 186,345.90
  4. Step 4: Simplify right side
    354,890.70x = 99,198,640,339.70
  5. Step 5: Solve for x
    x = 99,198,640,339.70/354,890.70
  6. Step 6: Final answer
    x = 279,518.85

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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.