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Finding the Fourth Proportional to 406,967.20, 610,450.80 and 185,783.20

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Solution

The fourth proportional to 406,967.20, 610,450.80 and 185,783.20 is: 278,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,967.20 : 610,450.80 = 185,783.20 : x
  2. Step 2: Convert to fraction form
    406,967.20/610,450.80 = 185,783.20/x
  3. Step 3: Cross multiply
    406,967.20x = 610,450.80 × 185,783.20
  4. Step 4: Simplify right side
    406,967.20x = 113,411,503,066.56
  5. Step 5: Solve for x
    x = 113,411,503,066.56/406,967.20
  6. Step 6: Final answer
    x = 278,674.80

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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.