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Finding the Fourth Proportional to 321,712.36, 443,963.58 and 178,472.40

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Solution

The fourth proportional to 321,712.36, 443,963.58 and 178,472.40 is: 246,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,712.36 : 443,963.58 = 178,472.40 : x
  2. Step 2: Convert to fraction form
    321,712.36/443,963.58 = 178,472.40/x
  3. Step 3: Cross multiply
    321,712.36x = 443,963.58 × 178,472.40
  4. Step 4: Simplify right side
    321,712.36x = 79,235,245,798.35
  5. Step 5: Solve for x
    x = 79,235,245,798.35/321,712.36
  6. Step 6: Final answer
    x = 246,292.20

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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.