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Finding the Fourth Proportional to 398,311.95, 597,743.87 and 158,401.27

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Solution

The fourth proportional to 398,311.95, 597,743.87 and 158,401.27 is: 237,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,311.95 : 597,743.87 = 158,401.27 : x
  2. Step 2: Convert to fraction form
    398,311.95/597,743.87 = 158,401.27/x
  3. Step 3: Cross multiply
    398,311.95x = 597,743.87 × 158,401.27
  4. Step 4: Simplify right side
    398,311.95x = 94,683,388,097.89
  5. Step 5: Solve for x
    x = 94,683,388,097.89/398,311.95
  6. Step 6: Final answer
    x = 237,711.64

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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.