Home / 321,400.48-443,525.60-178,159.28

Finding the Fourth Proportional to 321,400.48, 443,525.60 and 178,159.28

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Solution

The fourth proportional to 321,400.48, 443,525.60 and 178,159.28 is: 245,855.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,400.48 : 443,525.60 = 178,159.28 : x
  2. Step 2: Convert to fraction form
    321,400.48/443,525.60 = 178,159.28/x
  3. Step 3: Cross multiply
    321,400.48x = 443,525.60 × 178,159.28
  4. Step 4: Simplify right side
    321,400.48x = 79,018,201,557.57
  5. Step 5: Solve for x
    x = 79,018,201,557.57/321,400.48
  6. Step 6: Final answer
    x = 245,855.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.