Home / 280,961.02-420,931.14-162,381.88

Finding the Fourth Proportional to 280,961.02, 420,931.14 and 162,381.88

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Solution

The fourth proportional to 280,961.02, 420,931.14 and 162,381.88 is: 243,277.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,961.02 : 420,931.14 = 162,381.88 : x
  2. Step 2: Convert to fraction form
    280,961.02/420,931.14 = 162,381.88/x
  3. Step 3: Cross multiply
    280,961.02x = 420,931.14 × 162,381.88
  4. Step 4: Simplify right side
    280,961.02x = 68,351,589,863.74
  5. Step 5: Solve for x
    x = 68,351,589,863.74/280,961.02
  6. Step 6: Final answer
    x = 243,277.84

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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.