Home / 439,209.50-658,814.25-139,690.70

Finding the Fourth Proportional to 439,209.50, 658,814.25 and 139,690.70

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Solution

The fourth proportional to 439,209.50, 658,814.25 and 139,690.70 is: 209,536.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,209.50 : 658,814.25 = 139,690.70 : x
  2. Step 2: Convert to fraction form
    439,209.50/658,814.25 = 139,690.70/x
  3. Step 3: Cross multiply
    439,209.50x = 658,814.25 × 139,690.70
  4. Step 4: Simplify right side
    439,209.50x = 92,030,223,752.48
  5. Step 5: Solve for x
    x = 92,030,223,752.48/439,209.50
  6. Step 6: Final answer
    x = 209,536.05

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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.