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Finding the Fourth Proportional to 389,773.75, 537,887.78 and 210,925.75

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Solution

The fourth proportional to 389,773.75, 537,887.78 and 210,925.75 is: 291,077.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,773.75 : 537,887.78 = 210,925.75 : x
  2. Step 2: Convert to fraction form
    389,773.75/537,887.78 = 210,925.75/x
  3. Step 3: Cross multiply
    389,773.75x = 537,887.78 × 210,925.75
  4. Step 4: Simplify right side
    389,773.75x = 113,454,383,412.34
  5. Step 5: Solve for x
    x = 113,454,383,412.34/389,773.75
  6. Step 6: Final answer
    x = 291,077.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.