Home / 258,597,687.60-387,895,510.80-76,844,865.60

Finding the Fourth Proportional to 258,597,687.60, 387,895,510.80 and 76,844,865.60

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Solution

The fourth proportional to 258,597,687.60, 387,895,510.80 and 76,844,865.60 is: 115,266,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,597,687.60 : 387,895,510.80 = 76,844,865.60 : x
  2. Step 2: Convert to fraction form
    258,597,687.60/387,895,510.80 = 76,844,865.60/x
  3. Step 3: Cross multiply
    258,597,687.60x = 387,895,510.80 × 76,844,865.60
  4. Step 4: Simplify right side
    258,597,687.60x = 29,807,778,394,269,348
  5. Step 5: Solve for x
    x = 29,807,778,394,269,348/258,597,687.60
  6. Step 6: Final answer
    x = 115,266,995.12

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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.