Home / 439,942.40-659,848.80-124,431.20

Finding the Fourth Proportional to 439,942.40, 659,848.80 and 124,431.20

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Solution

The fourth proportional to 439,942.40, 659,848.80 and 124,431.20 is: 186,628.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,942.40 : 659,848.80 = 124,431.20 : x
  2. Step 2: Convert to fraction form
    439,942.40/659,848.80 = 124,431.20/x
  3. Step 3: Cross multiply
    439,942.40x = 659,848.80 × 124,431.20
  4. Step 4: Simplify right side
    439,942.40x = 82,105,778,002.56
  5. Step 5: Solve for x
    x = 82,105,778,002.56/439,942.40
  6. Step 6: Final answer
    x = 186,628.47

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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.