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Finding the Fourth Proportional to 278,045,994.60, 417,068,991.90 and 265,291,410.60

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Solution

The fourth proportional to 278,045,994.60, 417,068,991.90 and 265,291,410.60 is: 397,937,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,045,994.60 : 417,068,991.90 = 265,291,410.60 : x
  2. Step 2: Convert to fraction form
    278,045,994.60/417,068,991.90 = 265,291,410.60/x
  3. Step 3: Cross multiply
    278,045,994.60x = 417,068,991.90 × 265,291,410.60
  4. Step 4: Simplify right side
    278,045,994.60x = 110,644,821,178,670,960
  5. Step 5: Solve for x
    x = 110,644,821,178,670,960/278,045,994.60
  6. Step 6: Final answer
    x = 397,937,115.90

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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.