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Finding the Fourth Proportional to 469,263.40, 647,239.52 and 308,059.63

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Solution

The fourth proportional to 469,263.40, 647,239.52 and 308,059.63 is: 424,896.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,263.40 : 647,239.52 = 308,059.63 : x
  2. Step 2: Convert to fraction form
    469,263.40/647,239.52 = 308,059.63/x
  3. Step 3: Cross multiply
    469,263.40x = 647,239.52 × 308,059.63
  4. Step 4: Simplify right side
    469,263.40x = 199,388,366,204.63
  5. Step 5: Solve for x
    x = 199,388,366,204.63/469,263.40
  6. Step 6: Final answer
    x = 424,896.48

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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.