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Finding the Fourth Proportional to 355,234.20, 532,391.99 and 265,785.90

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Solution

The fourth proportional to 355,234.20, 532,391.99 and 265,785.90 is: 398,335.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,234.20 : 532,391.99 = 265,785.90 : x
  2. Step 2: Convert to fraction form
    355,234.20/532,391.99 = 265,785.90/x
  3. Step 3: Cross multiply
    355,234.20x = 532,391.99 × 265,785.90
  4. Step 4: Simplify right side
    355,234.20x = 141,502,284,214.94
  5. Step 5: Solve for x
    x = 141,502,284,214.94/355,234.20
  6. Step 6: Final answer
    x = 398,335.19

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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.