Home / 278,718,888.63-418,051,317.96-84,632,009.88

Finding the Fourth Proportional to 278,718,888.63, 418,051,317.96 and 84,632,009.88

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Solution

The fourth proportional to 278,718,888.63, 418,051,317.96 and 84,632,009.88 is: 126,939,811.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,718,888.63 : 418,051,317.96 = 84,632,009.88 : x
  2. Step 2: Convert to fraction form
    278,718,888.63/418,051,317.96 = 84,632,009.88/x
  3. Step 3: Cross multiply
    278,718,888.63x = 418,051,317.96 × 84,632,009.88
  4. Step 4: Simplify right side
    278,718,888.63x = 35,380,523,271,937,736
  5. Step 5: Solve for x
    x = 35,380,523,271,937,736/278,718,888.63
  6. Step 6: Final answer
    x = 126,939,811.81

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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.