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Finding the Fourth Proportional to 321,557.40, 443,750.40 and 178,330.68

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Solution

The fourth proportional to 321,557.40, 443,750.40 and 178,330.68 is: 246,097.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,557.40 : 443,750.40 = 178,330.68 : x
  2. Step 2: Convert to fraction form
    321,557.40/443,750.40 = 178,330.68/x
  3. Step 3: Cross multiply
    321,557.40x = 443,750.40 × 178,330.68
  4. Step 4: Simplify right side
    321,557.40x = 79,134,310,582.27
  5. Step 5: Solve for x
    x = 79,134,310,582.27/321,557.40
  6. Step 6: Final answer
    x = 246,097.00

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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.