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Finding the Fourth Proportional to 386,771.73, 533,813.18 and 243,576.69

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Solution

The fourth proportional to 386,771.73, 533,813.18 and 243,576.69 is: 336,178.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,771.73 : 533,813.18 = 243,576.69 : x
  2. Step 2: Convert to fraction form
    386,771.73/533,813.18 = 243,576.69/x
  3. Step 3: Cross multiply
    386,771.73x = 533,813.18 × 243,576.69
  4. Step 4: Simplify right side
    386,771.73x = 130,024,446,244.89
  5. Step 5: Solve for x
    x = 130,024,446,244.89/386,771.73
  6. Step 6: Final answer
    x = 336,178.77

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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.