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Finding the Fourth Proportional to 172,352.88, 258,338.16 and 72,483.48

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Solution

The fourth proportional to 172,352.88, 258,338.16 and 72,483.48 is: 108,644.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,352.88 : 258,338.16 = 72,483.48 : x
  2. Step 2: Convert to fraction form
    172,352.88/258,338.16 = 72,483.48/x
  3. Step 3: Cross multiply
    172,352.88x = 258,338.16 × 72,483.48
  4. Step 4: Simplify right side
    172,352.88x = 18,725,248,853.60
  5. Step 5: Solve for x
    x = 18,725,248,853.60/172,352.88
  6. Step 6: Final answer
    x = 108,644.83

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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.