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Finding the Fourth Proportional to 323,432.61, 485,242.52 and 133,857.98

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Solution

The fourth proportional to 323,432.61, 485,242.52 and 133,857.98 is: 200,825.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,432.61 : 485,242.52 = 133,857.98 : x
  2. Step 2: Convert to fraction form
    323,432.61/485,242.52 = 133,857.98/x
  3. Step 3: Cross multiply
    323,432.61x = 485,242.52 × 133,857.98
  4. Step 4: Simplify right side
    323,432.61x = 64,953,580,441.81
  5. Step 5: Solve for x
    x = 64,953,580,441.81/323,432.61
  6. Step 6: Final answer
    x = 200,825.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.