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Finding the Fourth Proportional to 529,676.30, 730,956.21 and 311,894.39

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Solution

The fourth proportional to 529,676.30, 730,956.21 and 311,894.39 is: 430,415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,676.30 : 730,956.21 = 311,894.39 : x
  2. Step 2: Convert to fraction form
    529,676.30/730,956.21 = 311,894.39/x
  3. Step 3: Cross multiply
    529,676.30x = 730,956.21 × 311,894.39
  4. Step 4: Simplify right side
    529,676.30x = 227,981,141,234.66
  5. Step 5: Solve for x
    x = 227,981,141,234.66/529,676.30
  6. Step 6: Final answer
    x = 430,415.98

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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.