Home / 280,890.30-420,460.65-162,209.10

Finding the Fourth Proportional to 280,890.30, 420,460.65 and 162,209.10

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Solution

The fourth proportional to 280,890.30, 420,460.65 and 162,209.10 is: 242,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,890.30 : 420,460.65 = 162,209.10 : x
  2. Step 2: Convert to fraction form
    280,890.30/420,460.65 = 162,209.10/x
  3. Step 3: Cross multiply
    280,890.30x = 420,460.65 × 162,209.10
  4. Step 4: Simplify right side
    280,890.30x = 68,202,543,621.92
  5. Step 5: Solve for x
    x = 68,202,543,621.92/280,890.30
  6. Step 6: Final answer
    x = 242,808.47

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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.