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Finding the Fourth Proportional to 439,990.68, 659,997.36 and 140,470.96

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Solution

The fourth proportional to 439,990.68, 659,997.36 and 140,470.96 is: 210,710.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,990.68 : 659,997.36 = 140,470.96 : x
  2. Step 2: Convert to fraction form
    439,990.68/659,997.36 = 140,470.96/x
  3. Step 3: Cross multiply
    439,990.68x = 659,997.36 × 140,470.96
  4. Step 4: Simplify right side
    439,990.68x = 92,710,462,756.67
  5. Step 5: Solve for x
    x = 92,710,462,756.67/439,990.68
  6. Step 6: Final answer
    x = 210,710.06

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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.