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Finding the Fourth Proportional to 361,701.80, 542,034.30 and 266,186.60

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Solution

The fourth proportional to 361,701.80, 542,034.30 and 266,186.60 is: 398,898.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,701.80 : 542,034.30 = 266,186.60 : x
  2. Step 2: Convert to fraction form
    361,701.80/542,034.30 = 266,186.60/x
  3. Step 3: Cross multiply
    361,701.80x = 542,034.30 × 266,186.60
  4. Step 4: Simplify right side
    361,701.80x = 144,282,267,400.38
  5. Step 5: Solve for x
    x = 144,282,267,400.38/361,701.80
  6. Step 6: Final answer
    x = 398,898.39

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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.