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Finding the Fourth Proportional to 395,151.60, 545,304.48 and 213,859.22

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Solution

The fourth proportional to 395,151.60, 545,304.48 and 213,859.22 is: 295,123.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,151.60 : 545,304.48 = 213,859.22 : x
  2. Step 2: Convert to fraction form
    395,151.60/545,304.48 = 213,859.22/x
  3. Step 3: Cross multiply
    395,151.60x = 545,304.48 × 213,859.22
  4. Step 4: Simplify right side
    395,151.60x = 116,618,390,755.31
  5. Step 5: Solve for x
    x = 116,618,390,755.31/395,151.60
  6. Step 6: Final answer
    x = 295,123.16

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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.