Home / 278,132,690.80-417,196,962.60-84,043,730.80

Finding the Fourth Proportional to 278,132,690.80, 417,196,962.60 and 84,043,730.80

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Solution

The fourth proportional to 278,132,690.80, 417,196,962.60 and 84,043,730.80 is: 126,064,969.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,132,690.80 : 417,196,962.60 = 84,043,730.80 : x
  2. Step 2: Convert to fraction form
    278,132,690.80/417,196,962.60 = 84,043,730.80/x
  3. Step 3: Cross multiply
    278,132,690.80x = 417,196,962.60 × 84,043,730.80
  4. Step 4: Simplify right side
    278,132,690.80x = 35,062,789,215,332,068
  5. Step 5: Solve for x
    x = 35,062,789,215,332,068/278,132,690.80
  6. Step 6: Final answer
    x = 126,064,969.62

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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.