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Finding the Fourth Proportional to 257,133.54, 385,801.84 and 79,654.39

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Solution

The fourth proportional to 257,133.54, 385,801.84 and 79,654.39 is: 119,513.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,133.54 : 385,801.84 = 79,654.39 : x
  2. Step 2: Convert to fraction form
    257,133.54/385,801.84 = 79,654.39/x
  3. Step 3: Cross multiply
    257,133.54x = 385,801.84 × 79,654.39
  4. Step 4: Simplify right side
    257,133.54x = 30,730,808,913.09
  5. Step 5: Solve for x
    x = 30,730,808,913.09/257,133.54
  6. Step 6: Final answer
    x = 119,513.03

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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.