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Finding the Fourth Proportional to 395,574.87, 545,782.56 and 248,415.59

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Solution

The fourth proportional to 395,574.87, 545,782.56 and 248,415.59 is: 342,743.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,574.87 : 545,782.56 = 248,415.59 : x
  2. Step 2: Convert to fraction form
    395,574.87/545,782.56 = 248,415.59/x
  3. Step 3: Cross multiply
    395,574.87x = 545,782.56 × 248,415.59
  4. Step 4: Simplify right side
    395,574.87x = 135,580,897,087.01
  5. Step 5: Solve for x
    x = 135,580,897,087.01/395,574.87
  6. Step 6: Final answer
    x = 342,743.96

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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.