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Finding the Fourth Proportional to 280,142.82, 420,217.94 and 88,010.98

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Solution

The fourth proportional to 280,142.82, 420,217.94 and 88,010.98 is: 132,017.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,142.82 : 420,217.94 = 88,010.98 : x
  2. Step 2: Convert to fraction form
    280,142.82/420,217.94 = 88,010.98/x
  3. Step 3: Cross multiply
    280,142.82x = 420,217.94 × 88,010.98
  4. Step 4: Simplify right side
    280,142.82x = 36,983,791,882.46
  5. Step 5: Solve for x
    x = 36,983,791,882.46/280,142.82
  6. Step 6: Final answer
    x = 132,017.63

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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.