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Finding the Fourth Proportional to 469,428.25, 647,804.85 and 254,567.20

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Solution

The fourth proportional to 469,428.25, 647,804.85 and 254,567.20 is: 351,299.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,428.25 : 647,804.85 = 254,567.20 : x
  2. Step 2: Convert to fraction form
    469,428.25/647,804.85 = 254,567.20/x
  3. Step 3: Cross multiply
    469,428.25x = 647,804.85 × 254,567.20
  4. Step 4: Simplify right side
    469,428.25x = 164,909,866,810.92
  5. Step 5: Solve for x
    x = 164,909,866,810.92/469,428.25
  6. Step 6: Final answer
    x = 351,299.41

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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.