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Finding the Fourth Proportional to 439,572.34, 659,457.96 and 140,069.98

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Solution

The fourth proportional to 439,572.34, 659,457.96 and 140,069.98 is: 210,136.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,572.34 : 659,457.96 = 140,069.98 : x
  2. Step 2: Convert to fraction form
    439,572.34/659,457.96 = 140,069.98/x
  3. Step 3: Cross multiply
    439,572.34x = 659,457.96 × 140,069.98
  4. Step 4: Simplify right side
    439,572.34x = 92,370,263,268.04
  5. Step 5: Solve for x
    x = 92,370,263,268.04/439,572.34
  6. Step 6: Final answer
    x = 210,136.66

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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.