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Finding the Fourth Proportional to 321,368.34, 443,480.76 and 185,402.58

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Solution

The fourth proportional to 321,368.34, 443,480.76 and 185,402.58 is: 255,851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,368.34 : 443,480.76 = 185,402.58 : x
  2. Step 2: Convert to fraction form
    321,368.34/443,480.76 = 185,402.58/x
  3. Step 3: Cross multiply
    321,368.34x = 443,480.76 × 185,402.58
  4. Step 4: Simplify right side
    321,368.34x = 82,222,477,084.36
  5. Step 5: Solve for x
    x = 82,222,477,084.36/321,368.34
  6. Step 6: Final answer
    x = 255,851.21

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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.