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Finding the Fourth Proportional to 534,861.11, 802,291.67 and 278,640.64

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Solution

The fourth proportional to 534,861.11, 802,291.67 and 278,640.64 is: 417,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,861.11 : 802,291.67 = 278,640.64 : x
  2. Step 2: Convert to fraction form
    534,861.11/802,291.67 = 278,640.64/x
  3. Step 3: Cross multiply
    534,861.11x = 802,291.67 × 278,640.64
  4. Step 4: Simplify right side
    534,861.11x = 223,551,064,713.71
  5. Step 5: Solve for x
    x = 223,551,064,713.71/534,861.11
  6. Step 6: Final answer
    x = 417,960.96

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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.