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Finding the Fourth Proportional to 278,652.96, 384,539.40 and 151,327.44

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Solution

The fourth proportional to 278,652.96, 384,539.40 and 151,327.44 is: 208,830.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,652.96 : 384,539.40 = 151,327.44 : x
  2. Step 2: Convert to fraction form
    278,652.96/384,539.40 = 151,327.44/x
  3. Step 3: Cross multiply
    278,652.96x = 384,539.40 × 151,327.44
  4. Step 4: Simplify right side
    278,652.96x = 58,191,362,981.14
  5. Step 5: Solve for x
    x = 58,191,362,981.14/278,652.96
  6. Step 6: Final answer
    x = 208,830.95

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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.