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Finding the Fourth Proportional to 207,992.40, 287,028.57 and 112,498.84

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Solution

The fourth proportional to 207,992.40, 287,028.57 and 112,498.84 is: 155,247.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,992.40 : 287,028.57 = 112,498.84 : x
  2. Step 2: Convert to fraction form
    207,992.40/287,028.57 = 112,498.84/x
  3. Step 3: Cross multiply
    207,992.40x = 287,028.57 × 112,498.84
  4. Step 4: Simplify right side
    207,992.40x = 32,290,381,171.86
  5. Step 5: Solve for x
    x = 32,290,381,171.86/207,992.40
  6. Step 6: Final answer
    x = 155,247.89

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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.