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Finding the Fourth Proportional to 357,951.21, 536,813.37 and 121,238.55

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Solution

The fourth proportional to 357,951.21, 536,813.37 and 121,238.55 is: 181,819.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,951.21 : 536,813.37 = 121,238.55 : x
  2. Step 2: Convert to fraction form
    357,951.21/536,813.37 = 121,238.55/x
  3. Step 3: Cross multiply
    357,951.21x = 536,813.37 × 121,238.55
  4. Step 4: Simplify right side
    357,951.21x = 65,082,474,599.41
  5. Step 5: Solve for x
    x = 65,082,474,599.41/357,951.21
  6. Step 6: Final answer
    x = 181,819.40

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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.