Home / 280,410,920.52-420,240,397.44-218,237,305.80

Finding the Fourth Proportional to 280,410,920.52, 420,240,397.44 and 218,237,305.80

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Solution

The fourth proportional to 280,410,920.52, 420,240,397.44 and 218,237,305.80 is: 327,063,339.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,410,920.52 : 420,240,397.44 = 218,237,305.80 : x
  2. Step 2: Convert to fraction form
    280,410,920.52/420,240,397.44 = 218,237,305.80/x
  3. Step 3: Cross multiply
    280,410,920.52x = 420,240,397.44 × 218,237,305.80
  4. Step 4: Simplify right side
    280,410,920.52x = 91,712,132,125,626,816
  5. Step 5: Solve for x
    x = 91,712,132,125,626,816/280,410,920.52
  6. Step 6: Final answer
    x = 327,063,339.60

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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.