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Finding the Fourth Proportional to 208,360.79, 287,539.28 and 112,867.49

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Solution

The fourth proportional to 208,360.79, 287,539.28 and 112,867.49 is: 155,757.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,360.79 : 287,539.28 = 112,867.49 : x
  2. Step 2: Convert to fraction form
    208,360.79/287,539.28 = 112,867.49/x
  3. Step 3: Cross multiply
    208,360.79x = 287,539.28 × 112,867.49
  4. Step 4: Simplify right side
    208,360.79x = 32,453,836,810.01
  5. Step 5: Solve for x
    x = 32,453,836,810.01/208,360.79
  6. Step 6: Final answer
    x = 155,757.89

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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.