Home / 321,270.09-443,355.35-178,032.53

Finding the Fourth Proportional to 321,270.09, 443,355.35 and 178,032.53

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Solution

The fourth proportional to 321,270.09, 443,355.35 and 178,032.53 is: 245,686.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,270.09 : 443,355.35 = 178,032.53 : x
  2. Step 2: Convert to fraction form
    321,270.09/443,355.35 = 178,032.53/x
  3. Step 3: Cross multiply
    321,270.09x = 443,355.35 × 178,032.53
  4. Step 4: Simplify right side
    321,270.09x = 78,931,674,649.54
  5. Step 5: Solve for x
    x = 78,931,674,649.54/321,270.09
  6. Step 6: Final answer
    x = 245,686.35

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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.