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Finding the Fourth Proportional to 571,954.92, 857,938.46 and 172,599.21

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Solution

The fourth proportional to 571,954.92, 857,938.46 and 172,599.21 is: 258,900.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,954.92 : 857,938.46 = 172,599.21 : x
  2. Step 2: Convert to fraction form
    571,954.92/857,938.46 = 172,599.21/x
  3. Step 3: Cross multiply
    571,954.92x = 857,938.46 × 172,599.21
  4. Step 4: Simplify right side
    571,954.92x = 148,079,499,561.62
  5. Step 5: Solve for x
    x = 148,079,499,561.62/571,954.92
  6. Step 6: Final answer
    x = 258,900.65

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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.