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Finding the Fourth Proportional to 208,281.56, 287,429.60 and 112,788.63

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Solution

The fourth proportional to 208,281.56, 287,429.60 and 112,788.63 is: 155,648.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,281.56 : 287,429.60 = 112,788.63 : x
  2. Step 2: Convert to fraction form
    208,281.56/287,429.60 = 112,788.63/x
  3. Step 3: Cross multiply
    208,281.56x = 287,429.60 × 112,788.63
  4. Step 4: Simplify right side
    208,281.56x = 32,418,790,805.45
  5. Step 5: Solve for x
    x = 32,418,790,805.45/208,281.56
  6. Step 6: Final answer
    x = 155,648.88

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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.