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Finding the Fourth Proportional to 280,992.68, 421,488.54 and 131,182.76

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Solution

The fourth proportional to 280,992.68, 421,488.54 and 131,182.76 is: 196,773.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,992.68 : 421,488.54 = 131,182.76 : x
  2. Step 2: Convert to fraction form
    280,992.68/421,488.54 = 131,182.76/x
  3. Step 3: Cross multiply
    280,992.68x = 421,488.54 × 131,182.76
  4. Step 4: Simplify right side
    280,992.68x = 55,292,029,985.57
  5. Step 5: Solve for x
    x = 55,292,029,985.57/280,992.68
  6. Step 6: Final answer
    x = 196,773.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.