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Finding the Fourth Proportional to 140,443.17, 210,665.16 and 40,611.48

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Solution

The fourth proportional to 140,443.17, 210,665.16 and 40,611.48 is: 60,917.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,443.17 : 210,665.16 = 40,611.48 : x
  2. Step 2: Convert to fraction form
    140,443.17/210,665.16 = 40,611.48/x
  3. Step 3: Cross multiply
    140,443.17x = 210,665.16 × 40,611.48
  4. Step 4: Simplify right side
    140,443.17x = 8,555,423,932.04
  5. Step 5: Solve for x
    x = 8,555,423,932.04/140,443.17
  6. Step 6: Final answer
    x = 60,917.34

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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.