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Finding the Fourth Proportional to 469,969.40, 648,555.72 and 255,107.72

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Solution

The fourth proportional to 469,969.40, 648,555.72 and 255,107.72 is: 352,047.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,969.40 : 648,555.72 = 255,107.72 : x
  2. Step 2: Convert to fraction form
    469,969.40/648,555.72 = 255,107.72/x
  3. Step 3: Cross multiply
    469,969.40x = 648,555.72 × 255,107.72
  4. Step 4: Simplify right side
    469,969.40x = 165,451,571,022.16
  5. Step 5: Solve for x
    x = 165,451,571,022.16/469,969.40
  6. Step 6: Final answer
    x = 352,047.54

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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.