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Finding the Fourth Proportional to 395,033.85, 545,146.35 and 222,988.03

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Solution

The fourth proportional to 395,033.85, 545,146.35 and 222,988.03 is: 307,723.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,033.85 : 545,146.35 = 222,988.03 : x
  2. Step 2: Convert to fraction form
    395,033.85/545,146.35 = 222,988.03/x
  3. Step 3: Cross multiply
    395,033.85x = 545,146.35 × 222,988.03
  4. Step 4: Simplify right side
    395,033.85x = 121,561,110,648.19
  5. Step 5: Solve for x
    x = 121,561,110,648.19/395,033.85
  6. Step 6: Final answer
    x = 307,723.28

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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.