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Finding the Fourth Proportional to 280,550.30, 420,884.63 and 90,995.94

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Solution

The fourth proportional to 280,550.30, 420,884.63 and 90,995.94 is: 136,513.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,550.30 : 420,884.63 = 90,995.94 : x
  2. Step 2: Convert to fraction form
    280,550.30/420,884.63 = 90,995.94/x
  3. Step 3: Cross multiply
    280,550.30x = 420,884.63 × 90,995.94
  4. Step 4: Simplify right side
    280,550.30x = 38,298,793,952.33
  5. Step 5: Solve for x
    x = 38,298,793,952.33/280,550.30
  6. Step 6: Final answer
    x = 136,513.11

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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.