Home / 439,811.20-659,630.40-144,323.20

Finding the Fourth Proportional to 439,811.20, 659,630.40 and 144,323.20

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Solution

The fourth proportional to 439,811.20, 659,630.40 and 144,323.20 is: 216,456.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,811.20 : 659,630.40 = 144,323.20 : x
  2. Step 2: Convert to fraction form
    439,811.20/659,630.40 = 144,323.20/x
  3. Step 3: Cross multiply
    439,811.20x = 659,630.40 × 144,323.20
  4. Step 4: Simplify right side
    439,811.20x = 95,199,970,145.28
  5. Step 5: Solve for x
    x = 95,199,970,145.28/439,811.20
  6. Step 6: Final answer
    x = 216,456.45

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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.