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Finding the Fourth Proportional to 355,003.70, 532,505.55 and 261,691.70

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Solution

The fourth proportional to 355,003.70, 532,505.55 and 261,691.70 is: 392,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,003.70 : 532,505.55 = 261,691.70 : x
  2. Step 2: Convert to fraction form
    355,003.70/532,505.55 = 261,691.70/x
  3. Step 3: Cross multiply
    355,003.70x = 532,505.55 × 261,691.70
  4. Step 4: Simplify right side
    355,003.70x = 139,352,282,638.94
  5. Step 5: Solve for x
    x = 139,352,282,638.94/355,003.70
  6. Step 6: Final answer
    x = 392,537.55

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1.5x scale

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.