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Finding the Fourth Proportional to 357,978.02, 536,938.92 and 208,122.75

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Solution

The fourth proportional to 357,978.02, 536,938.92 and 208,122.75 is: 312,167.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,978.02 : 536,938.92 = 208,122.75 : x
  2. Step 2: Convert to fraction form
    357,978.02/536,938.92 = 208,122.75/x
  3. Step 3: Cross multiply
    357,978.02x = 536,938.92 × 208,122.75
  4. Step 4: Simplify right side
    357,978.02x = 111,749,204,612.43
  5. Step 5: Solve for x
    x = 111,749,204,612.43/357,978.02
  6. Step 6: Final answer
    x = 312,167.79

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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.