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Finding the Fourth Proportional to 280,596.85, 420,957.47 and 80,901.66

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Solution

The fourth proportional to 280,596.85, 420,957.47 and 80,901.66 is: 121,370.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,596.85 : 420,957.47 = 80,901.66 : x
  2. Step 2: Convert to fraction form
    280,596.85/420,957.47 = 80,901.66/x
  3. Step 3: Cross multiply
    280,596.85x = 420,957.47 × 80,901.66
  4. Step 4: Simplify right side
    280,596.85x = 34,056,158,112.40
  5. Step 5: Solve for x
    x = 34,056,158,112.40/280,596.85
  6. Step 6: Final answer
    x = 121,370.42

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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.