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Finding the Fourth Proportional to 515,658.80, 773,302.76 and 178,608.64

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Solution

The fourth proportional to 515,658.80, 773,302.76 and 178,608.64 is: 267,848.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,658.80 : 773,302.76 = 178,608.64 : x
  2. Step 2: Convert to fraction form
    515,658.80/773,302.76 = 178,608.64/x
  3. Step 3: Cross multiply
    515,658.80x = 773,302.76 × 178,608.64
  4. Step 4: Simplify right side
    515,658.80x = 138,118,554,271.85
  5. Step 5: Solve for x
    x = 138,118,554,271.85/515,658.80
  6. Step 6: Final answer
    x = 267,848.73

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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.