Home / 215,105,643.60-322,784,436.60-78,804,805.20

Finding the Fourth Proportional to 215,105,643.60, 322,784,436.60 and 78,804,805.20

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Solution

The fourth proportional to 215,105,643.60, 322,784,436.60 and 78,804,805.20 is: 118,253,357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,105,643.60 : 322,784,436.60 = 78,804,805.20 : x
  2. Step 2: Convert to fraction form
    215,105,643.60/322,784,436.60 = 78,804,805.20/x
  3. Step 3: Cross multiply
    215,105,643.60x = 322,784,436.60 × 78,804,805.20
  4. Step 4: Simplify right side
    215,105,643.60x = 25,436,964,647,854,752
  5. Step 5: Solve for x
    x = 25,436,964,647,854,752/215,105,643.60
  6. Step 6: Final answer
    x = 118,253,357.85

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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.