Home / 278,221,348.80-417,332,023.20-253,987,639.20

Finding the Fourth Proportional to 278,221,348.80, 417,332,023.20 and 253,987,639.20

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Solution

The fourth proportional to 278,221,348.80, 417,332,023.20 and 253,987,639.20 is: 380,981,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,221,348.80 : 417,332,023.20 = 253,987,639.20 : x
  2. Step 2: Convert to fraction form
    278,221,348.80/417,332,023.20 = 253,987,639.20/x
  3. Step 3: Cross multiply
    278,221,348.80x = 417,332,023.20 × 253,987,639.20
  4. Step 4: Simplify right side
    278,221,348.80x = 105,997,175,335,127,616
  5. Step 5: Solve for x
    x = 105,997,175,335,127,616/278,221,348.80
  6. Step 6: Final answer
    x = 380,981,458.80

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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.