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Finding the Fourth Proportional to 208,386.88, 287,573.36 and 112,895.92

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Solution

The fourth proportional to 208,386.88, 287,573.36 and 112,895.92 is: 155,796.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,386.88 : 287,573.36 = 112,895.92 : x
  2. Step 2: Convert to fraction form
    208,386.88/287,573.36 = 112,895.92/x
  3. Step 3: Cross multiply
    208,386.88x = 287,573.36 × 112,895.92
  4. Step 4: Simplify right side
    208,386.88x = 32,465,859,044.69
  5. Step 5: Solve for x
    x = 32,465,859,044.69/208,386.88
  6. Step 6: Final answer
    x = 155,796.08

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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.