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Finding the Fourth Proportional to 439,595.59, 659,386.15 and 140,072.12

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Solution

The fourth proportional to 439,595.59, 659,386.15 and 140,072.12 is: 210,105.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,595.59 : 659,386.15 = 140,072.12 : x
  2. Step 2: Convert to fraction form
    439,595.59/659,386.15 = 140,072.12/x
  3. Step 3: Cross multiply
    439,595.59x = 659,386.15 × 140,072.12
  4. Step 4: Simplify right side
    439,595.59x = 92,361,615,929.14
  5. Step 5: Solve for x
    x = 92,361,615,929.14/439,595.59
  6. Step 6: Final answer
    x = 210,105.87

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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.