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Finding the Fourth Proportional to 402,736.70, 555,861.22 and 255,466.31

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Solution

The fourth proportional to 402,736.70, 555,861.22 and 255,466.31 is: 352,597.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,736.70 : 555,861.22 = 255,466.31 : x
  2. Step 2: Convert to fraction form
    402,736.70/555,861.22 = 255,466.31/x
  3. Step 3: Cross multiply
    402,736.70x = 555,861.22 × 255,466.31
  4. Step 4: Simplify right side
    402,736.70x = 142,003,811,327.53
  5. Step 5: Solve for x
    x = 142,003,811,327.53/402,736.70
  6. Step 6: Final answer
    x = 352,597.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.