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Finding the Fourth Proportional to 208,167.84, 287,278.58 and 127,579.79

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Solution

The fourth proportional to 208,167.84, 287,278.58 and 127,579.79 is: 176,064.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,167.84 : 287,278.58 = 127,579.79 : x
  2. Step 2: Convert to fraction form
    208,167.84/287,278.58 = 127,579.79/x
  3. Step 3: Cross multiply
    208,167.84x = 287,278.58 × 127,579.79
  4. Step 4: Simplify right side
    208,167.84x = 36,650,938,833.61
  5. Step 5: Solve for x
    x = 36,650,938,833.61/208,167.84
  6. Step 6: Final answer
    x = 176,064.37

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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.