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Finding the Fourth Proportional to 481,045.36, 721,354.74 and 256,363.92

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Solution

The fourth proportional to 481,045.36, 721,354.74 and 256,363.92 is: 384,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,045.36 : 721,354.74 = 256,363.92 : x
  2. Step 2: Convert to fraction form
    481,045.36/721,354.74 = 256,363.92/x
  3. Step 3: Cross multiply
    481,045.36x = 721,354.74 × 256,363.92
  4. Step 4: Simplify right side
    481,045.36x = 184,929,328,856.98
  5. Step 5: Solve for x
    x = 184,929,328,856.98/481,045.36
  6. Step 6: Final answer
    x = 384,432.21

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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.