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Finding the Fourth Proportional to 281,332.32, 421,910.24 and 81,666.56

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Solution

The fourth proportional to 281,332.32, 421,910.24 and 81,666.56 is: 122,474.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,332.32 : 421,910.24 = 81,666.56 : x
  2. Step 2: Convert to fraction form
    281,332.32/421,910.24 = 81,666.56/x
  3. Step 3: Cross multiply
    281,332.32x = 421,910.24 × 81,666.56
  4. Step 4: Simplify right side
    281,332.32x = 34,455,957,929.57
  5. Step 5: Solve for x
    x = 34,455,957,929.57/281,332.32
  6. Step 6: Final answer
    x = 122,474.23

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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.