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Finding the Fourth Proportional to 461,456, 636,809.28 and 249,488

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Solution

The fourth proportional to 461,456, 636,809.28 and 249,488 is: 344,293.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,456 : 636,809.28 = 249,488 : x
  2. Step 2: Convert to fraction form
    461,456/636,809.28 = 249,488/x
  3. Step 3: Cross multiply
    461,456x = 636,809.28 × 249,488
  4. Step 4: Simplify right side
    461,456x = 158,876,273,648.64
  5. Step 5: Solve for x
    x = 158,876,273,648.64/461,456
  6. Step 6: Final answer
    x = 344,293.44

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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.