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Finding the Fourth Proportional to 172,573.40, 258,888.16 and 51,006.28

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Solution

The fourth proportional to 172,573.40, 258,888.16 and 51,006.28 is: 76,517.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,573.40 : 258,888.16 = 51,006.28 : x
  2. Step 2: Convert to fraction form
    172,573.40/258,888.16 = 51,006.28/x
  3. Step 3: Cross multiply
    172,573.40x = 258,888.16 × 51,006.28
  4. Step 4: Simplify right side
    172,573.40x = 13,204,921,202.91
  5. Step 5: Solve for x
    x = 13,204,921,202.91/172,573.40
  6. Step 6: Final answer
    x = 76,517.71

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1.5x scale

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.