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Finding the Fourth Proportional to 406,687.80, 610,323.30 and 229,006.20

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Solution

The fourth proportional to 406,687.80, 610,323.30 and 229,006.20 is: 343,673.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,687.80 : 610,323.30 = 229,006.20 : x
  2. Step 2: Convert to fraction form
    406,687.80/610,323.30 = 229,006.20/x
  3. Step 3: Cross multiply
    406,687.80x = 610,323.30 × 229,006.20
  4. Step 4: Simplify right side
    406,687.80x = 139,767,819,704.46
  5. Step 5: Solve for x
    x = 139,767,819,704.46/406,687.80
  6. Step 6: Final answer
    x = 343,673.50

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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.