Home / 258,644,817.60-388,023,213.60-76,910,366.40

Finding the Fourth Proportional to 258,644,817.60, 388,023,213.60 and 76,910,366.40

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Solution

The fourth proportional to 258,644,817.60, 388,023,213.60 and 76,910,366.40 is: 115,382,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,644,817.60 : 388,023,213.60 = 76,910,366.40 : x
  2. Step 2: Convert to fraction form
    258,644,817.60/388,023,213.60 = 76,910,366.40/x
  3. Step 3: Cross multiply
    258,644,817.60x = 388,023,213.60 × 76,910,366.40
  4. Step 4: Simplify right side
    258,644,817.60x = 29,843,007,529,681,468
  5. Step 5: Solve for x
    x = 29,843,007,529,681,468/258,644,817.60
  6. Step 6: Final answer
    x = 115,382,197.90

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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.