Home / 258,827.20-388,125.60-118,628.80

Finding the Fourth Proportional to 258,827.20, 388,125.60 and 118,628.80

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Solution

The fourth proportional to 258,827.20, 388,125.60 and 118,628.80 is: 177,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,827.20 : 388,125.60 = 118,628.80 : x
  2. Step 2: Convert to fraction form
    258,827.20/388,125.60 = 118,628.80/x
  3. Step 3: Cross multiply
    258,827.20x = 388,125.60 × 118,628.80
  4. Step 4: Simplify right side
    258,827.20x = 46,042,874,177.28
  5. Step 5: Solve for x
    x = 46,042,874,177.28/258,827.20
  6. Step 6: Final answer
    x = 177,890.40

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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.