Home / 321,384.10-443,514.47-176,203.55

Finding the Fourth Proportional to 321,384.10, 443,514.47 and 176,203.55

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Solution

The fourth proportional to 321,384.10, 443,514.47 and 176,203.55 is: 243,163.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,384.10 : 443,514.47 = 176,203.55 : x
  2. Step 2: Convert to fraction form
    321,384.10/443,514.47 = 176,203.55/x
  3. Step 3: Cross multiply
    321,384.10x = 443,514.47 × 176,203.55
  4. Step 4: Simplify right side
    321,384.10x = 78,148,824,090.37
  5. Step 5: Solve for x
    x = 78,148,824,090.37/321,384.10
  6. Step 6: Final answer
    x = 243,163.32

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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.