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Finding the Fourth Proportional to 439,523.82, 659,333.93 and 139,899.15

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Solution

The fourth proportional to 439,523.82, 659,333.93 and 139,899.15 is: 209,864.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,523.82 : 659,333.93 = 139,899.15 : x
  2. Step 2: Convert to fraction form
    439,523.82/659,333.93 = 139,899.15/x
  3. Step 3: Cross multiply
    439,523.82x = 659,333.93 × 139,899.15
  4. Step 4: Simplify right side
    439,523.82x = 92,240,255,673.66
  5. Step 5: Solve for x
    x = 92,240,255,673.66/439,523.82
  6. Step 6: Final answer
    x = 209,864.07

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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.