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Finding the Fourth Proportional to 323,830.72, 447,009.36 and 243,491.52

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Solution

The fourth proportional to 323,830.72, 447,009.36 and 243,491.52 is: 336,110.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,830.72 : 447,009.36 = 243,491.52 : x
  2. Step 2: Convert to fraction form
    323,830.72/447,009.36 = 243,491.52/x
  3. Step 3: Cross multiply
    323,830.72x = 447,009.36 × 243,491.52
  4. Step 4: Simplify right side
    323,830.72x = 108,842,988,520.63
  5. Step 5: Solve for x
    x = 108,842,988,520.63/323,830.72
  6. Step 6: Final answer
    x = 336,110.76

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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.