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Finding the Fourth Proportional to 208,051.97, 287,113.80 and 112,560.72

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Solution

The fourth proportional to 208,051.97, 287,113.80 and 112,560.72 is: 155,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,051.97 : 287,113.80 = 112,560.72 : x
  2. Step 2: Convert to fraction form
    208,051.97/287,113.80 = 112,560.72/x
  3. Step 3: Cross multiply
    208,051.97x = 287,113.80 × 112,560.72
  4. Step 4: Simplify right side
    208,051.97x = 32,317,736,049.94
  5. Step 5: Solve for x
    x = 32,317,736,049.94/208,051.97
  6. Step 6: Final answer
    x = 155,334.92

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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.