Home / 258,001.20-387,001.80-195,015.60

Finding the Fourth Proportional to 258,001.20, 387,001.80 and 195,015.60

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Solution

The fourth proportional to 258,001.20, 387,001.80 and 195,015.60 is: 292,523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,001.20 : 387,001.80 = 195,015.60 : x
  2. Step 2: Convert to fraction form
    258,001.20/387,001.80 = 195,015.60/x
  3. Step 3: Cross multiply
    258,001.20x = 387,001.80 × 195,015.60
  4. Step 4: Simplify right side
    258,001.20x = 75,471,388,228.08
  5. Step 5: Solve for x
    x = 75,471,388,228.08/258,001.20
  6. Step 6: Final answer
    x = 292,523.40

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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.