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Finding the Fourth Proportional to 439,703.40, 659,555.10 and 262,410.60

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Solution

The fourth proportional to 439,703.40, 659,555.10 and 262,410.60 is: 393,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,703.40 : 659,555.10 = 262,410.60 : x
  2. Step 2: Convert to fraction form
    439,703.40/659,555.10 = 262,410.60/x
  3. Step 3: Cross multiply
    439,703.40x = 659,555.10 × 262,410.60
  4. Step 4: Simplify right side
    439,703.40x = 173,074,249,524.06
  5. Step 5: Solve for x
    x = 173,074,249,524.06/439,703.40
  6. Step 6: Final answer
    x = 393,615.90

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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.