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Finding the Fourth Proportional to 610,571.80, 915,211.31 and 205,378.27

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Solution

The fourth proportional to 610,571.80, 915,211.31 and 205,378.27 is: 307,849.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,571.80 : 915,211.31 = 205,378.27 : x
  2. Step 2: Convert to fraction form
    610,571.80/915,211.31 = 205,378.27/x
  3. Step 3: Cross multiply
    610,571.80x = 915,211.31 × 205,378.27
  4. Step 4: Simplify right side
    610,571.80x = 187,964,514,505.34
  5. Step 5: Solve for x
    x = 187,964,514,505.34/610,571.80
  6. Step 6: Final answer
    x = 307,849.98

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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.