Home / 321,488.12-482,166.30-121,739.60

Finding the Fourth Proportional to 321,488.12, 482,166.30 and 121,739.60

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Solution

The fourth proportional to 321,488.12, 482,166.30 and 121,739.60 is: 182,584.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,488.12 : 482,166.30 = 121,739.60 : x
  2. Step 2: Convert to fraction form
    321,488.12/482,166.30 = 121,739.60/x
  3. Step 3: Cross multiply
    321,488.12x = 482,166.30 × 121,739.60
  4. Step 4: Simplify right side
    321,488.12x = 58,698,732,495.48
  5. Step 5: Solve for x
    x = 58,698,732,495.48/321,488.12
  6. Step 6: Final answer
    x = 182,584.45

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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.