Home / 439,390.36-659,085.54-139,869.64

Finding the Fourth Proportional to 439,390.36, 659,085.54 and 139,869.64

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Solution

The fourth proportional to 439,390.36, 659,085.54 and 139,869.64 is: 209,804.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,390.36 : 659,085.54 = 139,869.64 : x
  2. Step 2: Convert to fraction form
    439,390.36/659,085.54 = 139,869.64/x
  3. Step 3: Cross multiply
    439,390.36x = 659,085.54 × 139,869.64
  4. Step 4: Simplify right side
    439,390.36x = 92,186,057,209.01
  5. Step 5: Solve for x
    x = 92,186,057,209.01/439,390.36
  6. Step 6: Final answer
    x = 209,804.46

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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.