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Finding the Fourth Proportional to 321,113.96, 481,495.58 and 254,978.92

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Solution

The fourth proportional to 321,113.96, 481,495.58 and 254,978.92 is: 382,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,113.96 : 481,495.58 = 254,978.92 : x
  2. Step 2: Convert to fraction form
    321,113.96/481,495.58 = 254,978.92/x
  3. Step 3: Cross multiply
    321,113.96x = 481,495.58 × 254,978.92
  4. Step 4: Simplify right side
    321,113.96x = 122,771,222,973.17
  5. Step 5: Solve for x
    x = 122,771,222,973.17/321,113.96
  6. Step 6: Final answer
    x = 382,329.14

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1.5x scale

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.