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Finding the Fourth Proportional to 321,437.76, 443,554.24 and 178,185.68

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Solution

The fourth proportional to 321,437.76, 443,554.24 and 178,185.68 is: 245,879.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,437.76 : 443,554.24 = 178,185.68 : x
  2. Step 2: Convert to fraction form
    321,437.76/443,554.24 = 178,185.68/x
  3. Step 3: Cross multiply
    321,437.76x = 443,554.24 × 178,185.68
  4. Step 4: Simplify right side
    321,437.76x = 79,035,013,871.28
  5. Step 5: Solve for x
    x = 79,035,013,871.28/321,437.76
  6. Step 6: Final answer
    x = 245,879.68

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1.5x scale

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.