Home / 395,128.64-545,271.92-225,365.60

Finding the Fourth Proportional to 395,128.64, 545,271.92 and 225,365.60

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Solution

The fourth proportional to 395,128.64, 545,271.92 and 225,365.60 is: 311,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,128.64 : 545,271.92 = 225,365.60 : x
  2. Step 2: Convert to fraction form
    395,128.64/545,271.92 = 225,365.60/x
  3. Step 3: Cross multiply
    395,128.64x = 545,271.92 × 225,365.60
  4. Step 4: Simplify right side
    395,128.64x = 122,885,533,413.95
  5. Step 5: Solve for x
    x = 122,885,533,413.95/395,128.64
  6. Step 6: Final answer
    x = 311,001.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.