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Finding the Fourth Proportional to 571,670.46, 857,506.70 and 172,425.51

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Solution

The fourth proportional to 571,670.46, 857,506.70 and 172,425.51 is: 258,638.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,670.46 : 857,506.70 = 172,425.51 : x
  2. Step 2: Convert to fraction form
    571,670.46/857,506.70 = 172,425.51/x
  3. Step 3: Cross multiply
    571,670.46x = 857,506.70 × 172,425.51
  4. Step 4: Simplify right side
    571,670.46x = 147,856,030,506.98
  5. Step 5: Solve for x
    x = 147,856,030,506.98/571,670.46
  6. Step 6: Final answer
    x = 258,638.57

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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.