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Finding the Fourth Proportional to 439,969.46, 659,940.01 and 140,468.31

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Solution

The fourth proportional to 439,969.46, 659,940.01 and 140,468.31 is: 210,697.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,969.46 : 659,940.01 = 140,468.31 : x
  2. Step 2: Convert to fraction form
    439,969.46/659,940.01 = 140,468.31/x
  3. Step 3: Cross multiply
    439,969.46x = 659,940.01 × 140,468.31
  4. Step 4: Simplify right side
    439,969.46x = 92,700,657,554.91
  5. Step 5: Solve for x
    x = 92,700,657,554.91/439,969.46
  6. Step 6: Final answer
    x = 210,697.94

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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.