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Finding the Fourth Proportional to 387,352.56, 580,898.04 and 147,409.44

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Solution

The fourth proportional to 387,352.56, 580,898.04 and 147,409.44 is: 221,064.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,352.56 : 580,898.04 = 147,409.44 : x
  2. Step 2: Convert to fraction form
    387,352.56/580,898.04 = 147,409.44/x
  3. Step 3: Cross multiply
    387,352.56x = 580,898.04 × 147,409.44
  4. Step 4: Simplify right side
    387,352.56x = 85,629,854,773.50
  5. Step 5: Solve for x
    x = 85,629,854,773.50/387,352.56
  6. Step 6: Final answer
    x = 221,064.38

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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.