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Finding the Fourth Proportional to 208,356.55, 287,531.74 and 112,863.62

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Solution

The fourth proportional to 208,356.55, 287,531.74 and 112,863.62 is: 155,751.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,356.55 : 287,531.74 = 112,863.62 : x
  2. Step 2: Convert to fraction form
    208,356.55/287,531.74 = 112,863.62/x
  3. Step 3: Cross multiply
    208,356.55x = 287,531.74 × 112,863.62
  4. Step 4: Simplify right side
    208,356.55x = 32,451,873,041.30
  5. Step 5: Solve for x
    x = 32,451,873,041.30/208,356.55
  6. Step 6: Final answer
    x = 155,751.63

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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.