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Finding the Fourth Proportional to 406,522.80, 610,158.60 and 206,986.68

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Solution

The fourth proportional to 406,522.80, 610,158.60 and 206,986.68 is: 310,670.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,522.80 : 610,158.60 = 206,986.68 : x
  2. Step 2: Convert to fraction form
    406,522.80/610,158.60 = 206,986.68/x
  3. Step 3: Cross multiply
    406,522.80x = 610,158.60 × 206,986.68
  4. Step 4: Simplify right side
    406,522.80x = 126,294,702,887.45
  5. Step 5: Solve for x
    x = 126,294,702,887.45/406,522.80
  6. Step 6: Final answer
    x = 310,670.65

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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.