Home / 258,064.80-387,289.20-133,341.60

Finding the Fourth Proportional to 258,064.80, 387,289.20 and 133,341.60

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Solution

The fourth proportional to 258,064.80, 387,289.20 and 133,341.60 is: 200,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,064.80 : 387,289.20 = 133,341.60 : x
  2. Step 2: Convert to fraction form
    258,064.80/387,289.20 = 133,341.60/x
  3. Step 3: Cross multiply
    258,064.80x = 387,289.20 × 133,341.60
  4. Step 4: Simplify right side
    258,064.80x = 51,641,761,590.72
  5. Step 5: Solve for x
    x = 51,641,761,590.72/258,064.80
  6. Step 6: Final answer
    x = 200,111.61

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1.5x scale

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.