Home / 278,718,907.64-418,051,346.44-84,632,028.88

Finding the Fourth Proportional to 278,718,907.64, 418,051,346.44 and 84,632,028.88

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Solution

The fourth proportional to 278,718,907.64, 418,051,346.44 and 84,632,028.88 is: 126,939,840.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,718,907.64 : 418,051,346.44 = 84,632,028.88 : x
  2. Step 2: Convert to fraction form
    278,718,907.64/418,051,346.44 = 84,632,028.88/x
  3. Step 3: Cross multiply
    278,718,907.64x = 418,051,346.44 × 84,632,028.88
  4. Step 4: Simplify right side
    278,718,907.64x = 35,380,533,625,232,964
  5. Step 5: Solve for x
    x = 35,380,533,625,232,964/278,718,907.64
  6. Step 6: Final answer
    x = 126,939,840.30

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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.