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Finding the Fourth Proportional to 439,911.87, 659,859.71 and 140,390.07

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Solution

The fourth proportional to 439,911.87, 659,859.71 and 140,390.07 is: 210,582.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,911.87 : 659,859.71 = 140,390.07 : x
  2. Step 2: Convert to fraction form
    439,911.87/659,859.71 = 140,390.07/x
  3. Step 3: Cross multiply
    439,911.87x = 659,859.71 × 140,390.07
  4. Step 4: Simplify right side
    439,911.87x = 92,637,750,175.13
  5. Step 5: Solve for x
    x = 92,637,750,175.13/439,911.87
  6. Step 6: Final answer
    x = 210,582.52

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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.