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Finding the Fourth Proportional to 208,371.78, 287,552.70 and 112,880.88

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Solution

The fourth proportional to 208,371.78, 287,552.70 and 112,880.88 is: 155,775.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,371.78 : 287,552.70 = 112,880.88 : x
  2. Step 2: Convert to fraction form
    208,371.78/287,552.70 = 112,880.88/x
  3. Step 3: Cross multiply
    208,371.78x = 287,552.70 × 112,880.88
  4. Step 4: Simplify right side
    208,371.78x = 32,459,201,822.38
  5. Step 5: Solve for x
    x = 32,459,201,822.38/208,371.78
  6. Step 6: Final answer
    x = 155,775.42

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1.5x scale

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.