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Finding the Fourth Proportional to 140,276.63, 210,384.88 and 40,418.21

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Solution

The fourth proportional to 140,276.63, 210,384.88 and 40,418.21 is: 60,618.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,276.63 : 210,384.88 = 40,418.21 : x
  2. Step 2: Convert to fraction form
    140,276.63/210,384.88 = 40,418.21/x
  3. Step 3: Cross multiply
    140,276.63x = 210,384.88 × 40,418.21
  4. Step 4: Simplify right side
    140,276.63x = 8,503,380,685.58
  5. Step 5: Solve for x
    x = 8,503,380,685.58/140,276.63
  6. Step 6: Final answer
    x = 60,618.65

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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.