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Finding the Fourth Proportional to 439,534.28, 659,083.28 and 139,975.80

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Solution

The fourth proportional to 439,534.28, 659,083.28 and 139,975.80 is: 209,894.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,534.28 : 659,083.28 = 139,975.80 : x
  2. Step 2: Convert to fraction form
    439,534.28/659,083.28 = 139,975.80/x
  3. Step 3: Cross multiply
    439,534.28x = 659,083.28 × 139,975.80
  4. Step 4: Simplify right side
    439,534.28x = 92,255,709,384.62
  5. Step 5: Solve for x
    x = 92,255,709,384.62/439,534.28
  6. Step 6: Final answer
    x = 209,894.23

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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.