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Finding the Fourth Proportional to 571,810, 857,542.20 and 172,417.36

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Solution

The fourth proportional to 571,810, 857,542.20 and 172,417.36 is: 258,573.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,810 : 857,542.20 = 172,417.36 : x
  2. Step 2: Convert to fraction form
    571,810/857,542.20 = 172,417.36/x
  3. Step 3: Cross multiply
    571,810x = 857,542.20 × 172,417.36
  4. Step 4: Simplify right side
    571,810x = 147,855,162,212.59
  5. Step 5: Solve for x
    x = 147,855,162,212.59/571,810
  6. Step 6: Final answer
    x = 258,573.94

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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.