Home / 258,893,896.80-388,340,845.20-157,304,085.60

Finding the Fourth Proportional to 258,893,896.80, 388,340,845.20 and 157,304,085.60

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Solution

The fourth proportional to 258,893,896.80, 388,340,845.20 and 157,304,085.60 is: 235,956,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,893,896.80 : 388,340,845.20 = 157,304,085.60 : x
  2. Step 2: Convert to fraction form
    258,893,896.80/388,340,845.20 = 157,304,085.60/x
  3. Step 3: Cross multiply
    258,893,896.80x = 388,340,845.20 × 157,304,085.60
  4. Step 4: Simplify right side
    258,893,896.80x = 61,087,601,555,317,144
  5. Step 5: Solve for x
    x = 61,087,601,555,317,144/258,893,896.80
  6. Step 6: Final answer
    x = 235,956,128.40

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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.