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Finding the Fourth Proportional to 526,372.86, 726,385.50 and 296,930.64

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Solution

The fourth proportional to 526,372.86, 726,385.50 and 296,930.64 is: 409,759.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,372.86 : 726,385.50 = 296,930.64 : x
  2. Step 2: Convert to fraction form
    526,372.86/726,385.50 = 296,930.64/x
  3. Step 3: Cross multiply
    526,372.86x = 726,385.50 × 296,930.64
  4. Step 4: Simplify right side
    526,372.86x = 215,686,111,401.72
  5. Step 5: Solve for x
    x = 215,686,111,401.72/526,372.86
  6. Step 6: Final answer
    x = 409,759.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.