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Finding the Fourth Proportional to 208,074.49, 287,140.75 and 112,579.09

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Solution

The fourth proportional to 208,074.49, 287,140.75 and 112,579.09 is: 155,358.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,074.49 : 287,140.75 = 112,579.09 : x
  2. Step 2: Convert to fraction form
    208,074.49/287,140.75 = 112,579.09/x
  3. Step 3: Cross multiply
    208,074.49x = 287,140.75 × 112,579.09
  4. Step 4: Simplify right side
    208,074.49x = 32,326,044,336.92
  5. Step 5: Solve for x
    x = 32,326,044,336.92/208,074.49
  6. Step 6: Final answer
    x = 155,358.04

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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.