Home / 278,909,533.10-418,380,046.05-84,827,279.90

Finding the Fourth Proportional to 278,909,533.10, 418,380,046.05 and 84,827,279.90

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Solution

The fourth proportional to 278,909,533.10, 418,380,046.05 and 84,827,279.90 is: 127,245,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,909,533.10 : 418,380,046.05 = 84,827,279.90 : x
  2. Step 2: Convert to fraction form
    278,909,533.10/418,380,046.05 = 84,827,279.90/x
  3. Step 3: Cross multiply
    278,909,533.10x = 418,380,046.05 × 84,827,279.90
  4. Step 4: Simplify right side
    278,909,533.10x = 35,490,041,270,858,244
  5. Step 5: Solve for x
    x = 35,490,041,270,858,244/278,909,533.10
  6. Step 6: Final answer
    x = 127,245,708.95

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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.