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Finding the Fourth Proportional to 323,015.76, 485,312.04 and 305,111.52

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Solution

The fourth proportional to 323,015.76, 485,312.04 and 305,111.52 is: 458,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,015.76 : 485,312.04 = 305,111.52 : x
  2. Step 2: Convert to fraction form
    323,015.76/485,312.04 = 305,111.52/x
  3. Step 3: Cross multiply
    323,015.76x = 485,312.04 × 305,111.52
  4. Step 4: Simplify right side
    323,015.76x = 148,074,294,198.70
  5. Step 5: Solve for x
    x = 148,074,294,198.70/323,015.76
  6. Step 6: Final answer
    x = 458,411.98

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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.